Find the derivative of the function at the given value of x using a graphing utility. If necessary, round to four decimal
places.
-$$f ( x ) = \sin ( 8 x ) ; x = 7$$
A) 6.8257
B) 521.5343
C) -6.8257
D) -521.5343

Question

Quizplus · Accepted Answer

The derivative of f(x) = sin(8x) is f'(x) = 8cos(8x). At x = 7, f'(7) = 8cos(56) ≈ 6.8257.

Find the Derivative of the Function at the Given Value f(x)=sin⁡(8x);x=7f ( x ) = \sin ( 8 x ) ; x = 7f(x)=sin(8x);x=7

Find the Derivative of the Function at the Given Value $f ( x ) = \sin ( 8 x ) ; x = 7$