Final Exam Review Sheet Note: Below is a complete list of the topics we’ve covered and some recommended exercises. If you want more exercises on a given topic, choose others in the same section or look at the reviews at the end of each chapter. As I’ve been emphasizing in class, the best way to study is to try each exercise without looking at the book or your notes for at least a few minutes–if you get stuck, try to think about the problem a little longer. If you need to look something up at this point, do it, then try to solve the problem again. Then try a similar problem. Do this until you can do the problem without looking at anything. This is a good way to ensure that you’ll retain what you’ve studied. P.1 Real numbers and their properties: Properties of real numbers, absolute value, exponential expressions Recommended exercises: 57,60,65,76,83,88,107 P.2 Integral exponents: Negative integral exponents (stuff like 2−3 ), rules of exponents, simplifying expressions with exponents Recommended exercises: 12,17,24,28,35,40,48,49,50,56 (There was some trouble with this section and P.3 on the first test–be sure to review them. Exponents come up a lot.) P.3 Rational exponents and radicals: roots, evaluating expressions involving the exponents 1/n, rational exponents, rules for rational exponents and radicals. Recommended exercises: 5,8,12,14,16,18,21,25,26,28,33,36,46,67,77 P.4 Polynomials: Definition of polynomials, adding and subtracting polynomials, multiplying polynomials (FOIL), dividing polynomials Recommended exercises: 20,22,34,36,38,44,52,78,85,88,97 P.5 Factoring polynomials: Factoring out the greatest common factor, factoring by grouping, factoring by trial and error, factoring special products (difference of squares, etc.), factoring by substitution Recommended exercises: 14,16,22,24,28,32,36,55,56, P.6 Rational expressions: Definition of a rational expression, reducing rational expressions, multiplying and dividing rational expressions, adding and subtracting rational expressions, complex fractions Recommended exercises: 7,10,16,18,27,30,34,51,53,57,67,72,75 P.7 Complex numbers: Definition of complex numbers, adding, subtracting, and multiplying complex numbers Recommended exercises: 15,22,29,33,35,36,66 1.1 Equations in one variable: definition of a linear equation in one variables, solving such equations, equations involving rational expressions, equations involving absolute value Recommended exercises: 14,16,18,21,24,37,41,44,63,65,71,74,95 1.2 We skipped this section. 1.3 Equations and graphs in two variables The Cartesian coordinate system, the Pythagorean theorem and the distance formula, the midpoint formula, the equation for a circle, graphing a circle, completing the square, equation of a line in standard form, graphing lines, x and y intercepts Recommended exercises: 19,22,35,42,50,52 (complete the square),67,70,80,82 1 1.4 Linear equations in two variables: Slope of a line, point-slope form, slope-intercept form, finding the equations of a line in any of these forms, finding the equation of a line going through two given points, graphing a line given any of these forms, parallel and perpendicular lines Recommended exercises: 10,20,22,24,35,44,48,54 1.5 We skipped this section 1.6 Quadratic equations: Definition of a quadratic equation, the zero factor property, solving quadratic equations by factoring, solving quadratic equations using the square root property, solving quadratic equations by completing the square, using the quadratic formula, significance of the discriminant Recommended exercises: 5,7,13,16,18,35,40,46,54,58,66 1.7 Linear and absolute value inequalities Interval notation, solving linear inequalities, solving absolute value inequalities Recommended exercises: 16,18,60,63,68 2.1 Functions: Definition of a function, the vertical line test, identifying the domain and range of various functions Recommended exercises: 19,22,35,48,51,53 2.2 Graphs of functions: Graphing functions by plotting points, graphing various common functions and equations(y = x2 , x = y 2 , y = x3 , circles and semicircles), tell whether functions are increasing, decreasing, or constant Recommended exercises: 10,15,23,29,52 2.3 Families of functions, transformations, and symmetry: Use the graph of y = f (x) to graph y = af (x − h) + k (horizontal and vertical translations, reflections, stretching and shrinking), symmetry about the x and y-axes Recommended exercises: 18,41,47,60,61,68 2.4 Operations with functions: Sums, differences, products, and quotients of fuctions, composition of functions, finding the domains of these Recommended exercises: 25,37,55,59 2.5 Inverse functions: One-to-one functions, using the horizontal line test to determine whether a function is one-to-one, definition of the inverse of a function, checking whether something is the inverse of a given function, finding the inverse of a function Recommended exercises: 13,49,65,70,83 3.1 Quadratic functions and inequalities: Rewriting quadratics in the form f (x) = a(x − h)2 + k, graphing quadratics in this form, finding the vertex and x and y intercepts of a quadratic, solving quadratic inequalities. Recommended exercises: 14,45,49,67,75 3.2 Zeros of polynomial functions: The remainder and factor theorems, the rational zero theorem, using the rational zero and factor theorems to completely factor a polynomial. Also, review, polynomial long division from the prerequisites chapter. Recommended exercises: 9,49, any of 55-78 3.3 The theory of equations: multiplicity of roots of a polynomial, the number of roots (counting multiplicity) of a polynomial is equal to the degree, using the conjugate pairs theorem to write down 2 a polynomial with real coefficients that has given roots, Descartes’ rule of signs Recommended exercises: 9,14,20,23,28,33,43,45,65 3.4 Miscellaneous equations: Solving equations involving square roots, equations of quadratic type, equations with exponents, and the other examples that we did in class Recommended exercises: 11,14,18,38,49,52,71 3.5 Graphs of polynomial functions: Determining behavior at x-intercepts, the leading coefficient test, putting all of this information together to graph a polynomial function, polynomial inequalities Recommended exercises: 23,34,55, any of 65-84,88,89 3.6 Rational functions: Definition of rational functions, finding their domains, finding horizontal, vertical, and slant asymptotes, using this information to graph a rational function Recommended exercises: 8, any of 33-52, 65,66,82,92 4.1 Exponential functions: Definition of exponential functions, their domain and range, graphing exponential functions, graphing families of exponential functions (vertical and horizontal translations, stretching/shrinking, etc.), solving exponential equations Recommended exercises: 31, 35, 37, 49, 54, 71, 76, 80 4.2 Logarithms: Definition of logarithms, their domain and range, evaluating logarithmic functions, graphing logarithmic functions, solving logarithmic equations, solving exponential equations using logarithms Recommended exercises: 19, 26, 35, 38, 45, 62, 72, 81, 85, 93, 95, 98, 103, 105 4.3 Rules of logarithms: inverse rules of logarithms, logarithm of a product, logaritm of a quotient, logarithm of a power, using these rules to simplify expressions and solve equations Recommended exercises: 16, 25, 29, 44, 50, 55, 61 4.4 More exponential and logarithmic equations: Solving various logarithmic equations, including those with more than one logarithm, solving exponential equations using logarithms, see strategy for solving exponential and logarithmic equations at the bottom of page 387 Recommended exercises: 5, 10, 16, 19, 23, 29, 42, 45, 47 (See the review exercises on p. 399 for more problems) 5.1 Angles and their measurements Definition of an angle, degree measure of an angle, radian measure of an angle, converting from degrees to radians and from radians to degrees, quadrants Recommended exercises: 26, 55, 58, 68, 70, 78, 92 5.2 The Sine and Cosine functions Definition of sine and cosine, evaluating sine and cosine at multiples of 90 degrees, multiples of 45 degrees, multiples of 30 degrees, using reference angles to evaluate sine and cosine in other quadrants, the Pythagorean identity (p. 428), using it to find cosine of an angle if you know sine of that angle and vice versa. Recommended exercises: 6, 12, 13, 18, 23, 22, 25 (better yet, make a table of sine and cosine evaluated at all angles we know–try to do this without looking at the book, then check your answer), 91, 92, 93 5.3 Graphing sine and cosine The graphs of sine and cosine, the definition of a periodic function, the periods of sine and cosine, definition of amplitude and phase shift, graphing families of trig functions (horizontal and vertical translations, stretching/shrinking/reflecting, changing the period (e.g. cos(3x), graphing combinations of these transformations) 3 Recommended exercises: 14, 18, 19, 26, 33, 37, 41, 43 5.4 The other trig functions: tan, cot, sec, csc The definitions of these functions in terms of sine and cosine, evaluating these functions, graphing tan(x), cot(x), sec(x), csc(x) by finding vertical asymptotes, zeros, and plotting points (to do this, you need to know all solutions to the equations cos(x) = 0, sin(x) = 0). The periods and fundamental cycles of these functions. Recommended exercises: graph tan, cot, sec, and csc without looking anything up, state the vertical asymptotes and x-intercepts of each of them, any of 5-30, 55, 61, 64, 77 5.5 The inverse trig functions Definition of arcsin, arccos, arctan (first, review the definition of an inverse function in 2.5), their domains and ranges, evaluating the inverse trig functions, graphing the inverse trig functions, evaluating compositions of functions (see example 8), the inverse of a general sine or cosine functions (see example 9) Recommended exercises: any of 21-26, 37-52 (choose a good number of these, at least one or two for each of the inverse trig functions), 70, 73, 75, 81, 99, 100 5.6 Right triangle trigonometry Trigonometric rations (”sohcahtoa”), solving a right triangle Recommended exercises: 13, 17, 27, 30, 33, 34 (you may need a calculator for these) (see p. 487 for more exercises from chapter 5) 6.1 Basic trig identities The difference between a trig identity and a (conditional) trig equation, identities from the definitions, reciprocal identities (if you know the definitions of tangent, secant, etc., you can deduce these from the definitions), Pythagorean identities, odd and even identities, verifying that an equation is an identity Recommended exercises: 10, 15, 29, 33, 47, 93, 100, 102 6.2 Verifying identities various tricks for verifying trig identities (see all of the examples in this section, e.g. factoring a trigonometric expression, combining fractions, etc.) Recommended exercises: 28, 30, 38, 48, 55, 58, 61, 63, 64, 74, 81 (really, any of 55-90 are good, get enough practice with these so that you have some intuition for what sorts of tricks work where) 6.3 Sum and difference identities Sine and cosine of a sum or difference, cofunction identities, using the sum/difference identities to evaluate the trig functions at angles that are a sum of angles you know (e.g. 75=45+30, -15=30-45) Recommended exercises: 37, 40, 43, 46, 47, 48 6.4 Double and half angle identities: The double angle identities, using them to find sine or cosine or tangent of twice of some angle, the half angle identities, using them to find sine or cosine or tangent of half of some angle (e.g. find sin(22.5)), using these equations to verify identities Recommended exercises: 9, 10, 12, 15, 45, 58, 59, 60 6.5 We skipped this section 6.6 Conditional trigonometric equations Finding all solutions to an equation of the form cos(x) = a, sin(x) = a, or tan(x) = a–find all solutions in the fundamental cycle, then add k times the period of the function to get all of them), the number of solutions to sin(x) = a, cos(x) = a, tan(x) = a in the fundamental cycle (may depend on what a is) Recommended exercises: any of 1-18, 34, 38, 42, 64, 68, 73 (for more exercises from chapter 6, see the review exercises on p.551) 7.1 Law of Sines Types of triangles (AAS, ASA, SSA, SAS, SSS), the law of sines, using the law 4 of sines to solve AAS, ASA, and SSA triangles, figuring out how many triangles are possible in the SSA case and solving them Recommended exercises: any of 7-20, try to find a few of each kind of triangle and solve them (especially SSA-try to do one example of each kind of case that can arise) 7.2 Law of Cosines The law of cosines, using it to solve SSS and SAS triangles, general procedure for solving triangles (see p. 569) Recommended exercises: any of 7-16, try to do at least two each of SSS and SAS. 7.3 Vectors Definition of vectors, addition of vectors, finding the horizontal and vertical components of a vector given magnitude and direction and vice versa Recommended exercises: 27,29,32,34,40,41 7.4 Trigonometric form of complex numbers: graphing complex numbers in the complex plane, finding the trigonometric form of a complex number (i.e. r(cos θ + i sin θ)), taking products and quotients of complex numbers in trigonometric form Recommended exercises: 33,35,55,56,58,61 (you may need a calculator for some of these) 7.5 We skipped this section 7.6 Polar equations: Polar coordinates, plotting points in polar coordinates, converting from polar to rectangular coordinates and vice versa, graphing polar equations Recommended exercises: any of 23-34, 35-46, 57,58,60,63,68,74,75 7.7 Parametric equations: definition of a parametric equation, graphing parametric equations Recommended exercises: 8,9,10,13,14 8.1 Systems of linear equations in two variables: Solving systems of linear equations by graphing, substitution, and elimination; types of systems (one solutions, infinitely many solutions, no solutions) and how to tell them apart Recommended exercises: 16,18,24,26,30,38,40,44 (what the book calls addition I called elimination in class) 5