Question

Is the following true or false? d3/dx3(xsin(x))=-xcos(x)-3sin(x)

Answer 1

Explanation:

That is a true statement.

The first derivative is

`f'(x)=xcos(x)+sin(x)`

The second derivative is

`f`

The third derivative is

`f'''(x)=-xcos(x)-3sin(x)`

If you don't know how to find a derivative at this point, you'll be in a lot of trouble when it comes to integration. I recommend learning these.