(a) If n is a positive integer, prove that d d x ( sin n x cos n x ) = n sin n − 1 x cos ( n + 1 ) x (b) Find a formula for the derivative of y = cos n x cos nx that is similar to the one in part (a).
(a) If n is a positive integer, prove that d d x ( sin n x cos n x ) = n sin n − 1 x cos ( n + 1 ) x (b) Find a formula for the derivative of y = cos n x cos nx that is similar to the one in part (a).
Solution Summary: The author explains the Power Rule combined with the Chain Rule. If n is a positive integer and g(r) is differentiable function, apply the product rule.
the correct answer is Ccould you please show me how to do it using the residue theorem
Use the information to find and compare Δy and dy. (Round your answers to four decimal places.)
y = x4 + 7 x = −3 Δx = dx = 0.01
Δy =
dy =
4. A car travels in a straight line for one hour. Its velocity, v, in miles per hour at six minute intervals is shown
in the table. For each problem, approximate the distance the car traveled (in miles) using the given method,
on the provided interval, and with the given number of rectangles or trapezoids, n.
Time (min) 0 6 12 18|24|30|36|42|48|54|60
Speed (mph) 0 10 20 40 60 50 40 30 40 40 65
a.) Left Rectangles, [0, 30] n=5
b.) Right Rectangles, [24, 42] n=3
c.) Midpoint Rectangles, [24, 60] n=3
d.) Trapezoids, [0, 24] n=4
Chapter 3 Solutions
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