Question

If
f(x) = 3 sin x + ln(4x), find f '(x).

f '(x) =

Answer 1

f(x) = 3 sin x + ln(4x)
f'(x) = d/dx (3 sin x) + d/dx (ln(4x))

d/dx sinx = cosx
d/dx lnx = 1/x

Can you do it now?

Answer 2

3cosx+....

Answer 3

:(

Answer 4

d/dx ln(ax) = (1/ax) (a) = ...

Answer 5

3cosx+1/x right??

Answer 6

It should be!

Answer 7

I meant it is correct.

Answer 8

thanks