THE ONTARIO CURRICULUM: PROPOSED REVISIONS OCTOBER 2005 Mathematics: Grade 12 Advanced Functions Side-by-Side The comparison charts comparing the original to the proposed revisions are intended as a guide to assist you with the review. In general: Grey cells indicate the expectation has been moved from this location An expectation in the left column, and nothing to the right of it (or the word deleted) means the expectation has been deleted An expectation in the right column, and nothing to the left of it, indicates the expectation is new When expectations are written side by side, the left column shows the original expectation and the right column shows the proposed revision for that expectation In some cases, notes in bold italics have been added for clarification Please Note: Original expectations that are not associated with a revised expectation have not necessarily been removed or deleted. Some overall expectations have been incorporated into specific expectations. Some specific expectations may have been combined, or moved to another section of the program. Original Revised Course Code: MCB 4U Name: Advanced Revised: Advanced Functions Functions and Introductory Calculus Grade: 12 Program Area: Mathematics Revised: Polynomial and Rational Functions Strand: Advanced Functions Section: Overall Expectations determine, through investigation, the characteristics of the graphs of polynomial functions of various degrees; demonstrate facility in the algebraic manipulation of polynomials; Unchanged: Overall Expectations determine the characteristics of a polynomial function of various degrees given its graph and make connections to its algebraic representation; determine the characteristics of a polynomial function of various degrees, given its algebraic representation and make connections to its graph; demonstrate an understanding of the nature of Moved to Grade 12 Advanced Functions - MCB 4U, exponential growth and decay; Strand: Trigonometric, Exponential and Logarithmic Functions, Section: Overall Expectations define and apply logarithmic functions; Deleted. demonstrate an understanding of the operation of Deleted. the composition of functions. Specific Expectations—Section: Investigating the Graphs of Polynomial Functions determine, through investigation, using graphing calculators or graphing software, various properties of the graphs of polynomial functions (e.g., determine the effect of the degree of a polynomial function on the shape of its graph; the effect of varying the coefficients in the polynomial function; the type and the number of x-intercepts; the behaviour near the x-intercepts; the end behaviours; the existence of symmetry); describe the nature of change in polynomial functions of degree greater than two, using finite differences in tables of values; compare the nature of change observed in polynomial functions of higher degree with that observed in linear and quadratic functions; sketch the graph of a polynomial function whose equation is given in factored form; determine an equation to represent a given graph of a polynomial function, using methods appropriate to the situation (e.g., using the zeros of the function; using a trial-and-error process on a graphing calculator or graphing software; using Revised: Investigating the Graphs of Polynomial and Rational Functions Unchanged: determine, through investigation, using graphing calculators or graphing software, various properties of the graphs of polynomial functions (e.g., determine the effect of the degree of a polynomial function on the shape of its graph; the effect of varying the coefficients in the polynomial function; the type and the number of x-intercepts; the behaviour near the x-intercepts; the end behaviours; the existence of symmetry); Unchanged: describe the nature of change in polynomial functions of degree greater than two, using finite differences in tables of values; compare the nature of change observed in polynomial functions of higher degree with that observed in linear and quadratic functions (e.g., compare the graphs of f(x) = x^4 and f(x) = x²; Unchanged: sketch the graph of a polynomial function whose equation is given in factored form; Unchanged: determine an equation to represent a given graph of a polynomial function, using methods appropriate to the situation (e.g., using the zeros of the function; using a trial-and-error process on a graphing calculator or graphing software; using Page 2 of 13 Draft of Proposed Senior Mathematics Curriculum finite differences). finite differences). draw, using technology, the graph of rational functions (e.g., f(x) = 1/x, g(x) = 3/(x - 3), h(x) = (x 2)/(x²-4) ) and identify through investigation, the key features of the graph (e.g., vertical vs. horizontal asymptotes, domain, range, positive/negative intervals, increasing/decreasing intervals); sketch the graph of a rational function given its equation by considering the key features of the function f(x) = 1/x; Specific Expectations—Section: Manipulating Algebraic Expressions demonstrate an understanding of the remainder theorem and the factor theorem; factor polynomial expressions of degree greater than two, using the factor theorem; Revised: Investigating the Algebra of Polynomial Functions Unchanged: demonstrate an understanding of the remainder theorem and the factor theorem; factor polynomial expressions of degree greater than two, using the factor theorem (e.g., x³ + 2x² - 1x - 2 and x^4 - 6x³ + 4x² + 6x - 5); determine, by factoring, the real or complex roots determine, by factoring, the real roots of polynomial of polynomial equations of degree greater than equations of degree greater than two (e.g., 2x³ - 3x² two; + 8x - 12 = 0) and verify graphically using technology; determine the real roots of non-factorable determine the real roots of non-factorable polynomial equations by interpreting the graphs polynomial equations (e.g., π x³- 4x² - 3x +π = 0) by of the corresponding functions, using graphing interpreting the graphs of the corresponding calculators or graphing software; functions, using graphing calculators or graphing software; write the equation of a family of polynomial write the equation of a family of polynomial functions, given the real or complex zeros [e.g., a functions, given the zeros [e.g., a polynomial polynomial function having non-repeated zeros 5, function having non-repeated zeros 5, -3, and -2 will 3, and 2 will be defined by the equation be defined by the function f(x) = k(x- 5)(x + 3)(x + f(x) = k(x5)(x + 3)(x + 2), 2), for any real number k) and find the specific for k is an element of a set aleph]; equation when given additional information; verify, by investigation with technology (e.g., dynamic geometry software), that the output values of a polynomial function can only change sign at a zero; describe intervals and distances, using absolutevalue notation; solve factorable polynomial inequalities; solve linear and factorable polynomial inequalities, by determining intercepts and representing the solutions on number lines (e.g., x^4 - 5x² + 4 < 0); solve non-factorable polynomial inequalities by solve non-factorable polynomial inequalities (e.g., x³ graphing the corresponding functions, using - x² + 3x - 9 ≥ 0) by graphing the corresponding graphing calculators or graphing software and functions (e.g., f(x) = x³ - x² + 3x - 9, using graphing identifying intervals above and below the x-axis; calculators or graphing software and identifying Page 3 of 13 Draft of Proposed Senior Mathematics Curriculum intervals above and below the x-axis; solve problems involving the abstract extensions solve problems involving the abstract extensions of of algorithms (e.g., a problem involving the concepts related to polynomials (e.g., problems nature of the roots of polynomial equations: If h involving the nature of the roots of polynomial and k are the roots of the equation equations, problems involving the factor theorem); 3x^2 + 28x - 20 = 0, Sample problem: For what values of k does the find the equation whose roots are h + k and hk; a function f(x) = x³ + 6x² + kx - 4 give the same problem involving the factor theorem: For what remainder when divided by x - 1 and x + 2? values of k does the function f(x) = x^3 + 6x^2 + kx - 4 give the same remainder when divided by either x - 1 or x + 2?). compare and describe, through investigation, the algebraic and graphical behaviour of even and odd polynomial functions (e.g., examining the values of the function for very large positive and negative values of x, the number of real roots, symmetry etc.) Sample problem: Under what conditions will an even function have an even number of zeros? solve equations and inequalities involving simple rational functions, graphically, and algebraically, using zeros, asymptotes and the values of the function between these intervals; Specific Expectations—Section: Understanding Deleted. the Nature of Exponential Growth and Decay identify, through investigations, using graphing calculators or graphing software, the key properties of exponential functions of the form a^x (a > 0, a != 1) and their graphs (e.g., the domain is the set of the real numbers; the range is the set of the positive real numbers; the function either increases or decreases throughout its domain; the graph has the x-axis as an asymptote and has y-intercept = 1); describe the graphical implications of changes in the parameters a, b, and c in the equation y = ca^x + b; compare the rates of change of the graphs of exponential and non-exponential functions (e.g., those with equations y = 2x, y = x^2, y = x^(1/2), and y = 2^x); Page 4 of 13 Draft of Proposed Senior Mathematics Curriculum describe the significance of exponential growth or decay within the context of applications represented by various mathematical models (e.g., tables of values, graphs); pose and solve problems related to models of exponential functions drawn from a variety of applications, and communicate the solutions with clarity and justification. Specific Expectations—Section: Defining and Deleted. Applying Logarithmic Functions define the logarithmic function log to the base a of x (a > 1) as the inverse of the exponential function a^x, and compare the properties of the two functions; express logarithmic equations in exponential form, and vice versa; simplify and evaluate expressions containing logarithms; solve exponential and logarithmic equations, using the laws of logarithms; solve simple problems involving logarithmic scales (e.g., the Richter scale, the pH scale, the decibel scale). Specific Expectations—Section: Understanding Unchanged: Understanding the Composition of the Composition of Functions Functions Moved from this location. identify composition as an operation in which two Moved to Grade 12 Advanced Functions - MCB 4U, functions are applied in succession; Strand: Trigonometric, Exponential and Logarithmic Functions, Section: Connecting Functions, Moved w Section demonstrate an understanding that the Moved to Grade 12 Advanced Functions - MCB 4U, composition of two functions exists only when the Strand: Trigonometric, Exponential and Logarithmic range of the first function overlaps the domain of Functions, Section: Connecting Functions, Moved w the second; Section determine the composition of two functions Deleted. expressed in function notation; decompose a given composite function into its Deleted. constituent parts; describe the effect of the composition of inverse Moved to Grade 12 Advanced Functions - MCB 4U, functions [i.e., Strand: Trigonometric, Exponential and Logarithmic f(f^(-1)(x)) = x]. Functions, Section: Connecting Functions, Moved w Page 5 of 13 Draft of Proposed Senior Mathematics Curriculum Section Strand: New strand added. New: Trigonometric, Exponential and Logarithmic Functions Specific Expectations—Section: New section added. Revised: Overall Expectations (Expectation moved here; formerly AFV.03) demonstrate an understanding of the nature of exponential growth and decay; Specific Expectations—Section: New section added. extend an understanding of exponential functions and the related logarithmic functions to solve problems involving exponential growth and decay; extend an understanding of trigonometric functions using radian measure and solve related problems; consolidate their understanding of the characteristics of functions by considering compound functions and the composition of functions Revised: Exponential and Logarithmic Functions solve exponential equations by finding a common base (e.g., 4^x = 8^(x+3), 2^(x+2) - 2^x = 12). evaluate numerical expressions involving logarithms (e.g., log 10(29), log3(25), log10(400) - log(10) 4), using a calculator,; determine, through investigation, the laws of logarithms and use them to simplify and evaluate logarithmic expressions; write a logarithmic statement in exponential form, and vice versa; solve exponential and logarithmic equations using the laws of logarithms define the logarithmic function f(x) = log b( x )(b > 0, b/=1) as the inverse of the exponential function f(x) = b^x; compare the properties of the exponential and logarithmic functions; pose and solve problems related to models of exponential and logarithmic functions drawn from a variety of applications (e.g., exponential growth and decay, the Richter scale, the pH scale, the decibel scale) Specific Expectations—Section: New section added. Revised: Trigonometric Functions define radian measure and develop the relationship between radian and degree measure; represent, in applications, radian measure in exact form, as an expression involving π (e.g., π/3, 2π) and in approximate form as a rational number (e.g. 1.05) Page 6 of 13 Draft of Proposed Senior Mathematics Curriculum determine the exact values of the sine, cosine, and tangent of the special angles 0, π/6, π/4, π/3, π/2, and their multiples; demonstrate facility in the use of radian measure in graphing (e.g., f(x) = cos(x), g(x)=2sin(x+ π/3) demonstrate facility in the use of the reciprocal trigonometric ratios (i.e., cosecant, secant and tangent) sketch the graph of the tangent function and the reciprocal trigonometric functions and identify the key features of their graphs (e.g., state the domain, range, and period and identify and explain the occurrence of asymptotes) demonstrate an understanding of the development of the compound angle and double angle formulae and the formulae to determine exact trigonometric values (e.g., determine the exact value of sin(pi/12)); solve, with and without graphing technology, linear and quadratic trigonometric equations between 0 and 2π, and over R (the Real numbers); determine, through investigation using graphing technology, whether or not two trigonometric expressions are equivalent; prove trigonometric identities using a variety of relationships, including the reciprocal relationships and the compound angle formulae; pose and solve problems related to models of trigonometric functions drawn from a variety of applications (e.g., tides, length of day, oscillating spring) with justification, with and without technology; Specific Expectations—Section: Understanding Revised: Connecting Functions the Composition of Functions Moved to this location. describe, through investigation using a variety of tools and strategies, some of the properties of compound functions (e.g., f(x) = x sin x, g(x) = x² +2^x); (Expectation moved here; formerly AF5.01) demonstrate an understanding of composition as an identify composition as an operation in which two operation in which two functions are applied in functions are applied in succession; succession and determine the composition of two functions expressed in functional notation (Expectation moved here; formerly AF5.02) demonstrate an understanding of the domain and demonstrate an understanding that the range of the composition of two functions (i.e., composition of two functions exists only when the f(g(x)) is defined for those x for which g(x) is range of the first function overlaps the domain of defined and included in the domain of f(x)) Page 7 of 13 Draft of Proposed Senior Mathematics Curriculum the second; (Expectation moved here; formerly AF5.05) describe the effect of the composition of inverse functions [i.e., f(f^(-1)(x)) = x]. describe, using a variety of representations and an understanding of the inverse as a reverse process, the effect of the composition of inverse functions [i.e., f(f^(-1)(x)) = x]. compare and contrast, through investigation, the characteristics (e.g., symmetry, asymptotes, intercepts, domain and range, increasing/decreasing, critical points) of functions (i.e., linear, quadratic, trigonometric, exponential, logarithmic, polynomial, rational) using a variety of representations (e.g., tables of values, function machines, graphs and algebraic representations); Strand: Underlying Concepts of Calculus Revised: Rates of Change Section: Overall Expectations Unchanged: Overall Expectations determine and interpret the average and instantaneous rates of change of given functions (Expectation moved here; formerly CCV.03) demonstrate an understanding of the relationship demonstrate an understanding of the relationship between the shape of a graph and the rate of change between the derivative of a function and the key of the dependent variable. features of its graph. determine and interpret the rates of change of Unchanged: determine and interpret the rates of functions drawn from the natural and social change of functions drawn from the natural and sciences; social sciences; demonstrate an understanding of the graphical definition of the derivative of a function; demonstrate an understanding of the relationship Moved to Grade 12 Advanced Functions - MCB 4U, between the derivative of a function and the key Strand: Rates of Change, Section: Overall features of its graph. Expectations Specific Expectations—Section: Understanding Unchanged: Understanding Rates of Change Rates of Change pose problems and formulate hypotheses pose problems and formulate hypotheses regarding regarding rates of change within applications rates of change within applications drawn from drawn from the natural and social sciences; mathematics (e.g., rate of change of the area of a circle as the radius increases) and from the real world (e.g., inflation rates, cycling up a hill, infection rates) Sample Problem: Given that the bacteria count in a sample is 1 000 000 at 1:00 pm, and 250 000 at 3:00 pm, pose and solve a problem involving the rate of change of the bacterial population.) calculate and interpret average rates of change calculate and interpret average rates of change from from various models (e.g., equations, tables of various representations (e.g., equations, tables of values, graphs) of functions drawn from the values, graphs) of functions drawn from the natural Page 8 of 13 Draft of Proposed Senior Mathematics Curriculum natural and social sciences; and social sciences; Enter Your Revision: estimate and interpret instantaneous rates of estimate instantaneous rates of change given various change from various models (e.g., equations, representations (e.g., algebraic, graphical); tables of values, graphs) of functions drawn from the natural and social sciences; interpret the meaning of the instantaneous rates of change; Sample Problem: If the instantaneous rate of change is given by a speedometer as 60 km/h, interpret the meaning); explain the difference between average and demonstrate an understanding of the difference instantaneous rates of change within applications between average and instantaneous rates of change and in general; using relevant applications (e.g., for a given average velocity over an interval, there must be at least one point in time in that interval, where the average is the instantaneous velocity) Sample Problem: How can you determine the average rate of change and the instantaneous rate of change from a table of values? make inferences from models of applications and Unchanged: make inferences from models of compare the inferences with the original applications and compare the inferences with the hypotheses regarding rates of change. original hypotheses regarding rates of change. Specific Expectations—Section: Understanding Revised: Interpreting Rates of Change on a the Graphical Definition of the Derivative Graph demonstrate an understanding that the slope of a Unchanged: demonstrate an understanding that the secant on a curve represents the average rate of slope of a secant on a curve represents the average change of the function over an interval, and that rate of change of the function over an interval, and the slope of the tangent to a curve at a point that the slope of the tangent to a curve at a point represents the instantaneous rate of change of the represents the instantaneous rate of change of the function at that point; function at that point; demonstrate an understanding that the slope of the demonstrate, through investigation, an tangent to a curve at a point is the limiting value understanding that the slope of the tangent to a curve of the slopes of a sequence of secants; at a point can be approximated by the slope of a secant; demonstrate an understanding that the demonstrate an understanding that the instantaneous instantaneous rate of change of a function at a rate of change of a function at a point can be point is the limiting value of a sequence of approximated by average rates of change; average rates of change; demonstrate an understanding that the derivative determine when the rate of change is increasing or of a function at a point is the instantaneous rate of decreasing from the shape of the graph of a function; change or the slope of the tangent to the graph of the function at that point. demonstrate an understanding of the concept of acceleration (e.g., rate of change of velocity, accelerating cost), graphically, numerically (i.e., second differences), algebraically, verbally; Page 9 of 13 Draft of Proposed Senior Mathematics Curriculum (Expectation moved here; formerly CC3.03) sketch, by hand, the graph of the derivative of a given graph. sketch, by hand, the graph of the rate of change of a function, (i.e. using the slopes of the tangents), given the graph of the function; sketch the graph of a function, given the graph of its rate of change (e.g., given a velocity-time graph, sketch the position-time graph ); (Expectation moved here; formerly CC3.01) describe the key features of a given graph of a describe the key features of a given graph of a function, including intervals of increase and function, including intervals of increase and decrease, local and absolute extrema, endpoints, decrease, critical points, points of inflection, and points of inflection, and intervals of concavity; intervals of concavity; (Expectation moved here; formerly CC3.02) Unchanged: identify the nature of the rate of change of a given function, and the rate of change of the rate of change, as they relate to the key features of the graph of that function; Specific Expectations—Section: Using Calculus Revised: Using Concepts of Rate of Change in Techniques to Analyse Models of Functions Applications and Modelling Moved to this location. (Expectation moved here; formerly DA6.01) determine the key features of a mathematical model determine the key features of a mathematical of an application drawn from the natural or social model of an application drawn from the natural or sciences, using concepts of rate of change; social sciences, using the techniques of differential calculus; (Expectation moved here; formerly DA6.02) Unchanged: compare the key features of a mathematical model with the features of the application it represents; (Expectation moved here; formerly DA6.03) predict future behaviour by extrapolating from a predict future behaviour within an application by function used to model a relationship in an extrapolating from a mathematical model of a application and determine when it is appropriate; function; (Expectation moved here; formerly DA6.04) pose questions related to an application and answer pose questions related to an application and them by analysing mathematical models, using the answer them by analysing mathematical models, concept of rate of change using the techniques of differential calculus; demonstrate an understanding of how functions are used to model situations in the real world, using a variety of tools and strategies (e.g., dynamic statistical software, dynamic geometry software, spreadsheets, models); Specific Expectations—Section: Connecting Derivatives and Graphs describe the key features of a given graph of a function, including intervals of increase and decrease, critical points, points of inflection, and intervals of concavity; Unchanged: Connecting Derivatives and Graphs Moved to Grade 12 Advanced Functions - MCB 4U, Strand: Rates of Change, Section: Interpreting Rates of Change on a Graph Page 10 of 13 Draft of Proposed Senior Mathematics Curriculum identify the nature of the rate of change of a given Moved to Grade 12 Advanced Functions - MCB 4U, function, and the rate of change of the rate of Strand: Rates of Change, Section: Interpreting Rates change, as they relate to the key features of the of Change on a Graph graph of that function; sketch, by hand, the graph of the derivative of a Moved to Grade 12 Advanced Functions - MCB 4U, given graph. Strand: Rates of Change, Section: Interpreting Rates of Change on a Graph Strand: Derivatives and Applications Deleted. Section: Overall Expectations demonstrate an understanding of the firstprinciples definition of the derivative; determine the derivatives of given functions, using manipulative procedures; determine the derivatives of exponential and logarithmic functions; solve a variety of problems, using the techniques of differential calculus; sketch the graphs of polynomial, rational, and exponential functions; analyse functions, using differential calculus. Specific Expectations—Section: Understanding the First-Principles Definition of the Derivative determine the limit of a polynomial, a rational, or an exponential function; demonstrate an understanding that limits can give information about some behaviours of graphs of functions [e.g., lim as x approaches 5 (x^2-25)/(x-5) predicts a hole at (5, 10)]; identify examples of discontinuous functions and the types of discontinuities they illustrate; determine the derivatives of polynomial and simple rational functions from first principles, using the definitions of the derivative function, f’(x) = lim as h approaches 0[f(x+h)-f(x)]/h and f’(a) = lim as x approaches a[f(x) - f(a)]/(x-a); identify examples of functions that are not differentiable. Specific Expectations—Section: Determining Derivatives justify the constant, power, sum-and- difference, product, quotient, and chain rules for determining Page 11 of 13 Draft of Proposed Senior Mathematics Curriculum derivatives; determine the derivatives of polynomial and rational functions, using the constant, power, sum-and-difference, product, quotient, and chain rules for determining derivatives; determine second derivatives; determine derivatives, using implicit differentiation in simple cases (e.g., 4x^2 + 9y^2 = 36). Specific Expectations—Section: Determining the Derivatives of Exponential and Logarithmic Functions identify e as lim as n approaches infinity(1 + 1/n)^n and approximate the limit, using informal methods; define ln x as the inverse function of e^x; determine the derivatives of the exponential functions a^x and e^x and the logarithmic functions log base a of x and ln x; determine the derivatives of combinations of the basic polynomial, rational, exponential, and logarithmic functions, using the rules for sums, differences, products, quotients, and compositions of functions. Specific Expectations—Section: Using Differential Calculus to Solve Problems determine the equation of the tangent to the graph of a polynomial, a rational, an exponential, or a logarithmic function, or of a conic; solve problems of rates of change drawn from a variety of applications (including distance, velocity, and acceleration) involving polynomial, rational, exponential, or logarithmic functions; solve optimization problems involving polynomial and rational functions; solve related-rates problems involving polynomial and rational functions. Specific Expectations—Section: Sketching the Graphs of Polynomial, Rational, and Exponential Functions determine, from the equation of a rational function, the intercepts and the positions of the Page 12 of 13 Draft of Proposed Senior Mathematics Curriculum vertical and the horizontal or oblique asymptotes to the graph of the function; determine, from the equation of a polynomial, a rational, or an exponential function, the key features of the graph of the function (i.e., intervals of increase and decrease, critical points, points of inflection, and intervals of concavity), using the techniques of differential calculus, and sketch the graph by hand; determine, from the equation of a simple combination of polynomial, rational, or exponential functions (e.g., f(x) = e^x/x), the key features of the graph of the combination of functions, using the techniques of differential calculus, and sketch the graph by hand; sketch the graphs of the first and second derivative functions, given the graph of the original function; sketch the graph of a function, given the graph of its derivative function. Specific Expectations—Section: Using Calculus Techniques to Analyse Models of Functions Moved from this location. determine the key features of a mathematical Moved to Grade 12 Advanced Functions - MCB 4U, model of an application drawn from the natural or Strand: Rates of Change, Section: Using Concepts of social sciences, using the techniques of Rate of Change in Applications and Modelling, differential calculus; Moved w Section compare the key features of a mathematical model Moved to Grade 12 Advanced Functions - MCB 4U, with the features of the application it represents; Strand: Rates of Change, Section: Using Concepts of Rate of Change in Applications and Modelling, Moved w Section predict future behaviour within an application by Moved to Grade 12 Advanced Functions - MCB 4U, extrapolating from a mathematical model of a Strand: Rates of Change, Section: Using Concepts of function; Rate of Change in Applications and Modelling, Moved w Section pose questions related to an application and Moved to Grade 12 Advanced Functions - MCB 4U, answer them by analysing mathematical models, Strand: Rates of Change, Section: Using Concepts of using the techniques of differential calculus; Rate of Change in Applications and Modelling, Moved w Section communicate findings clearly and concisely, Deleted. using an effective integration of essay and mathematical forms. Page 13 of 13 Draft of Proposed Senior Mathematics Curriculum