f(x)=12x/sinx+cosx

find f'(-pie)
need help!! anyone know the answer!!

In google type: calc101

When you see list of resultc click on:

Calc101com Automatic Calculus and Algebra Help

When page be opec clik option: derivatives

When this page be open in rectacangle type:

12x/sin[x]+cos[x]

and click options DO IT

You will see solution step-by-step