TAILIEUCHUNG - Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 73

Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 73. 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 | Applications 701 18. A wheel of radius 5 meters is oriented vertically and spinning counterclockwise at a rate of 7 revolutions per minute. If the origin is placed at the center of the wheel a point on the rim has a horizontal position of 7 0 at time t 0. What is the horizontal component of the point s velocity at t 2 19. In this problem you will show that y C1 sin kx C2 cos kx is a solution to the differential equation y -k2y. Recall that a differential equation is an equation involving a derivative and a function is a solution to the differential equation if it satisfies the differential equation. a Show that y1 sinkx is a solution to y -k2y. To do this first find jp Then write y1 -k2y1 and verify that the two sides are indeed equal. b Show that y2 C1 sin kx is a solution to y -k2y. c Show that if y1 and y2 are solutions to y -k2y then y3 C1y1 C2y2 is a solution to y -k2y as well. Conclude that y C1 sin kx C2 cos kx is a solution to the differential equation y -k2y. 20. For each of the functions below determine whether the function is a solution to differential equation i differential equation ii or neither. Differential equations i and ii are given below. 16y ii. y -16y a y1 t sin 16t b y2 t e4t c y3 t 3 cos 4t d y4 t sin 4t 1 e y5 t e-16t f y6 t -3e-4t g y7 t e4t 3 h y8 t - sin4t Hint Four of the eight functions given are solutions to neither differential equation. 21. Each of the functions below is a solution to one of the differential equations below. i. y 9 ii. y 9y iii. y -9y For each function determine which of the three differential equations it satisfies. a y1 t 5 sin 3t b y2 t e3t c y3 t 2 cos 3t d y4 t 3t 8 e y5 t 4e-3t f y6 t - t 2 702 CHAPTER 21 Differentiation of Trigonometric Functions 22. After having done the previous problem make up a solution to each of the three differential equations below. i. y 9 ii. y 9y iii y -9y Your answers must be different from the solutions given in the preceding problem but you can use those .

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