AP Calculus AB Summer Assignment 2013 Welcome to the AP Calculus summer assignment! This summer assignment is a self-paced, selfassessed guide to help you review, develop, and hone some basic math skills that are essential for entering Calculus with a good foundation. We will not spend time relearning these skills in class. Instead, you are responsible for making sure you have a firm base for beginning the year in Calculus. While the Calculus material and concepts will be new, our class uses skills from all other math classes, including Algebra, Geometry, and Trigonometry. Additionally, it is important to be comfortable using the features on your graphing calculator. The answers to the review will be posted on the Osbourn Park website by the end of the summer. Remember, this is a self-assessed assignment designed to help you strengthen your Pre-Calculus skills. Use the posted answers to determine which concepts need additional attention. Then, follow up with additional review and practice. Some helpful websites and video links are provided to get you started if you need review on certain topics. However, if you need additional help on a topic, you are encouraged to seek out additional resources (books, websites, videos, etc.) Good luck and have a great summer! Recommended Resources for Overall Precalculus Review: The Complete Idiot’s Guide to Precalculus by W. Michael Kelley CliffsQuickReview Precalculus by W. Michael Kelley Pre-calculus Demystified by Rhonda Huettenmueller http://www.coolmath.com/precalculus-review-calculus-intro/index.html Factoring Trinomials Helpful Websites http://www.purplemath.com/modules/factquad2.htm http://www.regentsprep.org/Regents/math/algtrig/ATV1/LgroupingBox.htm http://www.algebrabugsme.com/factoringquadratics.html http://seattlecentral.edu/faculty/alevy/Box_%20Method.pdf Helpful YouTube Videos http://www.youtube.com/watch?v=WipeiPxKTCI http://www.youtube.com/watch?v=_Wb_CT-1VN8 Factor each completely. (Trinomials) 1. 3𝑝2 − 2𝑝 − 5 2. 2𝑛2 + 3𝑛 − 9 3. 3𝑛2 − 8𝑛 + 4 4. 5𝑛2 + 19𝑛 + 12 5. 2𝑣 2 + 11𝑣 + 5 6. 2𝑛2 + 5𝑛 + 2 7. 7𝑎2 + 53𝑎 + 28 8. 9𝑘 2 + 66𝑘 + 21 9. 15𝑛2 − 27𝑛 − 6 10. 5𝑥 2 − 18𝑥 + 9 11. 4𝑛2 − 15𝑛 − 25 12. 4𝑥 2 − 35𝑥 + 49 13. 4𝑛2 − 17𝑛 + 4 14. 6𝑥 2 + 7𝑥 − 49 15. 6𝑥 2 + 37𝑥 + 6 16. −6𝑎2 − 25𝑎 − 25 Factor each completely. (Difference of Two Squares) 1. 16𝑛2 − 9 2. 4𝑚2 − 25 3. 16𝑏 2 − 40𝑏 + 25 4. 4𝑥 2 − 4𝑥 + 1 5. 9𝑥 2 − 1 6. 𝑛2 − 25 7. 𝑛4 − 100 8. 𝑎4 − 9 Solving Quadratic Equations Helpful Websites (solving by factoring) http://www.purplemath.com/modules/solvquad.htm http://www.regentsprep.org/Regents/math/algtrig/ATE3/quadlesson2.htm Helpful Video (solving by factoring) https://www.khanacademy.org/math/algebra/quadratics/quadratic_odds_ends/v/solving-aquadratic-by-factoring Helpful Websites (solving by quadratic formula) http://www.purplemath.com/modules/quadform.htm http://www.regentsprep.org/Regents/math/algtrig/ATE3/quadformula.htm Helpful Video (solving by quadratic formula) https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/quad_formul a_tutorial/v/using-the-quadratic-formula Solve each equation by factoring. 1. (𝑘 + 1)(𝑘 − 5) = 0 2. (𝑎 + 1)(𝑎 + 2) = 0 3. (4𝑘 + 5)(𝑘 + 1) = 0 4. (2𝑚 + 3)(4𝑚 + 3) = 0 5. 𝑥 2 − 11𝑥 + 19 = −5 6. 𝑛2 + 7𝑛 + 15 = 5 7. 𝑛2 − 10𝑛 + 22 = −2 8. 𝑛2 + 3𝑛 − 12 = 6 9. 6𝑛2 − 18𝑛 − 18 = 6 10. 7𝑟 2 − 14𝑟 = −7 Solve each equation with the quadratic formula. 1. 𝑚2 − 5𝑚 − 14 = 0 2. 𝑏 2 − 4𝑏 + 4 = 0 3. 2𝑚2 + 2𝑚 − 12 = 0 4. 2𝑥 2 − 3𝑥 − 5 = 0 5. 𝑥 2 + 4𝑥 + 3 = 0 6. 2𝑥 2 + 3𝑥 − 20 = 0 7. 4𝑏 2 + 8𝑏 + 7 = 4 8. 2𝑚2 − 7𝑚 − 13 = −10 Using the TI-83/84 Calculator You should be comfortable with every calculator operation covered on the following website: http://www.prenhall.com/divisions/esm/app/graphing/ti83/ Get hands-on practice by using your calculator while following through the step-by-step directions provided. Pay special attention to how to use the following calculator operations and buttons: Solve 𝑓(𝑥) = 0 Min/Max Store values Solve equation Intersection Zeros Window Table Vars button ~~Avoiding graphing a “spike” or “phantom asymptote” on the graphing calculator. 1 f x the graph on the calculator is often shown with a line at x 1 x 1 Use a “friendly window” or a “decimal window” ZOOM 4: ZDecimal to eliminate the line. This will also show holes in the graph for undefined x-values. x2 1 Ex: f x 2 x 2x 3 ~~Graphing piecewise functions using the graphing calculator 3 x, x 1 f (x) 2 x, 1 x Enter this into y1 and y2 using the symbols from the TEST menu y1 3 x /x 1 y2 2x /1 x 2nd MATH We use division instead of multiplication so that the calculator will display the different pieces of the function in connected mode without drawing extra vertical segments. x 2, Ex: f x 1, x, x 1 1 x 1 x 1 Again, enter this into y1, y2, and y3 using the symbols from the TEST menu. You will find “and” and “or” in the LOGIC menu. To get there, hit the right arrow one time once you are in the TEST menu. y1 x 2 / x 1 y2 1 /x 1 and x 1 y3 x / x 1 Unit Circle Helpful Websites http://www.regentsprep.org/Regents/math/algtrig/ATT5/unitcircle.htm http://www.mathsisfun.com/geometry/unit-circle.html Helpful Videos http://www.youtube.com/watch?v=ao4EJzNWmK8 http://www.youtube.com/watch?v=cIVpemcoAlY By the way, we use RADIANS (and only radians) in AP Calculus AB. Graphing 1. Graph each of the following parent functions without a calculator. Plot all relevant points on the grid provided. Complete the information about each graph listed below. a. y = 1 c. y = x2 y y x x Domain: Domain: Range: Range: x-intercept(s): increasing interval(s): y-intercept(s): decreasing interval(s): Name of graph: Name of graph: d. y = x3 b. y = x y y x x Domain: Domain: Range: Range: x-intercept(s): x-intercept(s): y-intercept(s): y-intercept(s): increasing interval(s): increasing interval(s): decreasing interval(s): decreasing interval(s): Name of graph: Name of graph: x e. y = g. y y 1 x y x x Domain: Domain: Range: Range: x-intercept(s): x-intercept(s): y-intercept(s): y-intercept(s): increasing interval(s): increasing interval(s): decreasing interval(s): decreasing interval(s): Name of graph: asymptote(s): f. y = 3 x h. 𝑦 = y 1 𝑥2 x x Domain: Range: x-intercept(s): y-intercept(s): increasing interval(s): decreasing interval(s): Name of graph: y Domain: Range: x-intercept(s): y-intercept(s): increasing interval(s): decreasing interval(s): asymptote(s): i. y = 2x j. 𝑦 = 𝑒 𝑥 y y x x Domain: Domain: Range: Range: x-intercept(s): y-intercept(s): increasing interval(s): increasing interval(s): decreasing interval(s): decreasing interval(s): asymptote(s): asymptote(s): Name of graph: Name of graph: k. y = lnx 𝑥 y 𝑖𝑓 𝑥 ≥ 4 2 l. 𝑔(𝑥) = {√𝑥 𝑥 2 y 𝑖𝑓 0 < 𝑥 < 4 𝑖𝑓 𝑥 < 0 x x Domain: Range: x-intercept(s): increasing interval(s): decreasing interval(s): asymptote(s): Name of graph: g(-3) = g(1) = g(0) = Is g(x) a continuous function? Explain. 2. Graph the following equations that are transformations of one of the parent graphs from problem a. 𝑦 = (𝑥 − 3)2 − 1 y d. 𝑦 = 𝑒 𝑥 2 y x 3 x e. 𝑦 = 2−𝑥 b. 𝑦 = − √𝑥 + 4 y y x x 3 f. 𝑦 = − 2√(𝑥 + 2) c. 𝑦 = 𝑥 y y x x Geometry 1. Formulas and Units you need to know: Write the formula for each item given along with the correct units if one length of the figure was measured in cm. You must have these memorized for the entire school year. Formula Units Perimeter of a figure Circumference of a circle Area of a Circle Area of a Square Area of a Rectangle Area of a Trapezoid Volume of a Prism (nonrectangular) Volume of a Cylinder Volume of a Cone Surface Area of a Prism Surface Area of a Cylinder Algebra 1. For each of the following sets of points, find: the slope the equation of the line that fits these points a) (2, 8) (6, 0) b) (5, 4) (10, 8) c) (0, 4) (0, 3) Point-Slope Form of a Line Helpful Website http://www.purplemath.com/modules/strtlneq2.htm 2. Expand the following expressions. a. (8 x) 2 b. (2 x 4) 2 3. Decide whether each of the following simplifications is accurate. If not, correct the right side of the equation to make it true. ? 2 3 5 a. 3 3 9 ? b. (3a) 4 3a 4 ? c. -24 16 d. 3x + 4y 2 e. (2 x ) f. ? 7xy ? 4x2 ? 2 x 3 6x 2 2 x 2 x( x 2 3x) ? 2 g. ( x 25) ( x 5)( x 5) 2 h. ( x 2) ? x2 4 i. ? 432 12 3 j. x y ? xy k. l. ? x2 4 x 2 4 10 ? 2 5 2 1 m. 3 x ? 1 3x x2 1 ? x 1 n. x 1 o. 2 x? x 2 p. a b ? a b x x x q. a ?a a x b x b r. 5 x 10 ? x 2 20 4 s. 2x 1 ? 1 1 2x t. 2 4 ? 2x 3x 3 3x x ? ax u. a y ay v. x 3 2 x 2 4 x 8 ? x 2 ( x 2) 2 x3 x2 x 6 x3 x 2 x 1 ? x 2 1 w. 4 x x3 2x 2 x3 2 x. x y ? x z b w a yw a z b Rensselaer Polytechnic Institute has put together a booklet entitled “Ready… Set… CALCULUS” to help incoming students prepare for Calculus classes. You can download the booklet by visiting: http://calculus.math.rpi.edu/rsc-online-version.pdf. You may choose to print the 63-page file or you can work from the computer screen. Not only does this booklet include excellent problems and answers (Chapter 8), but it also provides notes and examples as well as helpful additional websites (Chapter 7). Please complete the following from “Ready… Set… CALCULUS”: Read Chapter 1 Rules of the Game Chapter 2 Arithmetic/Algebraic Operations o 2.1 #1, 6 – 11 o 2.2 #2 – 9 **You can skip Chapter 3.** Chapter 4 Trigonometric Functions o 4.1 #5 – 7, 11 o 4.2 #1 – 9, 11 – 18 Chapter 5 Logarithms/Exponentials o 5.1 #1 – 11, 13, 14 o 5.2 #1 – 4, 7 – 15, 17 Chapter 6 Graph Recognition o 6.1 #1 – 8 Read Chapter 7 Examples and Help Check your answers using Chapter 8 Answers Information Lines: slope: m y 2 y1 x 2 x1 equation of a line: y y1 mx x1 Binomial Expansion: (a b) 2 (a b)(a b) a 2 2ab b 2 Graphing: f ( x) f ( x h) is a horizontal translation to the right h units. f ( x) f ( x) k is a vertical translation down k units. f ( x) f ( x) is a reflection across the x-axis. Domain is the set of possible x-values. Range is the set of possible y-values. PurpleMath Topics: Beginning Algebra Topics: Slope of a Straight Line Midpoint Formula Straight-line Equations PurpleMath Topic: Beginning Algebra Topics: Polynomials: Multiplying PurpleMath Topics: Intermediate Algebra Topics: Domain and Range Graphing Quadratic Equations Piecewise Functions Helpful Websites http://www.purplemath.com/modules/graphing3.htm http://www.coolmath.com/precalculus-review-calculus-intro/precalculus-algebra/07graphing-piecewise-defined-functions-01.htm http://www.uiowa.edu/~examserv/mathmatters/tutorial_quiz/geometry/piecewisefunction s.html Helpful YouTube Videos http://www.youtube.com/watch?v=-gwffMEr8i8 Vertical and Horizontal Asymptotes Helpful Websites http://www.purplemath.com/modules/asymtote4.htm http://www.mathsisfun.com/algebra/asymptote.html Helpful YouTube Videos http://www.youtube.com/watch?v=YlEFGmfiNis http://www.youtube.com/watch?v=iWsNUdl_zV4 Random Trig Fact: cos 𝑥 𝑥 ≠ cos