TAILIEUCHUNG - Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 64

Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 64. A major complaint of professors teaching calculus is that students don't have the appropriate background to work through the calculus course successfully. This text is targeted directly at this underprepared audience. This is a single-variable (2-semester) calculus text that incorporates a conceptual re-introduction to key precalculus ideas throughout the exposition as appropriate. This is the ideal resource for those schools dealing with poorly prepared students or for schools introducing a slower paced, integrated precalculus/calculus course | Modifying the Graphs of Sine and Cosine 611 7. Find equations that fit the curves below y a A 1 1 2 3 4 5 8. Graph the following. a y sin x b y sin x 9. Find the period amplitude and balance value of each of the following functions. a f x sin 3x b g x -4 cos x 3 c A x si 2 d y x 4 sin 2x 1 e x 4 sin 2x 1 10. a A Ferris wheel with diameter 20 feet makes one revolution every 8 minutes. Graph the height of a point on the Ferris wheel versus time assuming that at i 0 the point is at height 0. Give an equation whose graph is the picture you ve drawn. b The Ferris wheel slows down so that it makes one revolution every 10 minutes. Adjust both your picture and your equation. 11. a What is the domain of g x Vsin x b On the same set of axes graph f x sin x and g x Vsin x. Use different colors if you have them at your disposal. 12. Suppose we have the equation of a sine curve y sin ir with period 4 amplitude 1. a We wish to shift the graph over 1 unit to the left. Which of the following will accomplish this i. y sin 2x 1 ii. y sin 2 x 1 sin 2x 2 iii. y sin 2x 1 iv. y sin 22 x 1 sin 22x 22 Be sure that you get this right. Draw a picture of what you are aiming for and then try a point or two to verify. For example you might run a test on x 0. b For each of the remaining three choices in part a describe in words what happens to the original graph. c In order to obtain the desired result in part a it is probably simplest to use a cosine function. What cosine function will give the desired result d Suppose A B and C are positive constants and y A sin Bx C . What are the period and amplitude of the sine graph Describe the horizontal shift. 612 CHAPTER 19 Trigonometry Introducing Periodic Functions 13. Match the equations with the graphs. Do this flrst without consulting a graphing calculator. Think about spacing of intercepts sign relative heights of peaks etc. a y x sin x b y x2 sin x c y sin x2 d y e 0 2x sin x e y e0 2x sin x f y sin x i M0 y v MA A in A 14. The .

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