Question

find the critical numbers of the following function:
f(θ)=10cos(θ)+5sin2(θ),−π≤θ≤π

Answer 1

I'm really stuck please help!!!!

Answer 2

Okay, so this is the same kinda problom like the last in which you have to take the derivative of 10cos(x) + (5sin(x))^2, right? So the derivative of cos is -sin(x) and derivatvie of (5*sin(x))^2 is 10*sin(x)*cos(x). Now find all the zeros between -pin and pin. use a graphing calculator would prob be the easiest.