Find the Derivative of the Function at the Given Value $$f ( x ) = x \sin ( 10 x ) ; x = 8$$

Multiple Choice

Find the derivative of the function at the given value of x using a graphing utility. If necessary, round to four decimal
places.
- $$f ( x ) = x \sin ( 10 x ) ; x = 8$$

A) -9.8247
B) -7,950.7128
C) -8.8297
D) 7,950.7128