`f(x) = (x^3)cos(x)` Use the Product Rule to find the derivative of the function.

1 Answer

hkj1385's profile pic

hkj1385 | (Level 1) Assistant Educator

Posted on

`f(x) = (x^3)*cos(x)`

`f'(x) = 3(x^2)*cos(x) - (x^3)*sin(x)`

`'or, f'(x) = (x^2)*[3cos(x) - x*sin(x)]`

``

` `