See attached first.  The function h is given by h(x)=cos(kx)f(x) for all real numbers,  where k is a constant.  Find h'(x) and write an equation for the line tangent to the graph of h at x=0.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
Problem 57SE: Repeat the previous exercise to find the formula forthe APY of an account that compounds daily....
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See attached first. 

The function h is given by h(x)=cos(kx)f(x) for all real numbers,  where k is a constant.  Find h'(x) and write an equation for the line tangent to the graph of h at x=0.

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