How can I differentiate xsin4x ?

1 Answer
Jun 18, 2018

Here is your answer 1.sin4x + 4.x.cos4x

Explanation:

Using Product Rule

f(x).g(x) = f(x)'.g(x) + f(x).g(x)'

And Chain Rule

We can write question like this
=>x . sin4x

=> 1 . sin4x + x . cos4x . 4