Question

How do you differentiate `f(x)=sin(3x+1)` using the chain rule?

Answer 1

I found: `3cos(3x+1)`

Explanation:

First you differentiate the `sin` as it is (in red) and then the argument (in blue) and multiply together:
So:
`f'(x)=color(red)(cos(3x+1))*color(blue)(3)=3cos(3x+1)`