# Math Help - stationary points of f(x)= sin^3xcosx

1. ## stationary points of f(x)= sin^3xcosx

Please, I search for stationary points of f(x)=sin^3xcosx
I got x +kpi
x/2 +kpi

but result is only first
why??Who is right???
many thanks!!!

2. ## Re: stationary points of f(x)= sin^3xcosx

Originally Posted by Boo
Please, I search for stationary points of f(x)=sin^3xcosx
I got x +kpi
x/2 +kpi
Do you mean that $\sin^3(x)\cos(x)$ is the derivative?
Or is that the function for which you are to find stationary points?

If it is the second the neither of those is the answer.

3. ## Re: stationary points of f(x)= sin^3xcosx

No, sorry, points of inflection!!!