Question

f ' (x) = 2(2xsin(x)+x^2cos(x))

f ' (3)=?? Help please!

Answer 1

i think you have to plug in the 3 in the x's of the function...
so you set it up like f(3)=??????...
yes... then solve and continue...

Answer 2

Yeah, but what about sin(3) and cos(3), there's no such thing.

Answer 3

f ' (x) = 2(2xsin(x)+x^2cos(x))
f'(3) = 2(2(3)sin(3)+3^2cos(3))
f'(3) =

Answer 4

There is a such thing sin(3) and cos(3)

Answer 5

oops... Thanks, I Hate MATH, too. Haha