posted by carolin .
how do not understand how to find a deriviative of this function?Do i use chain rule and product rule?
r= the square root of (theta*sin*theta)
No one has answered this question yet.
ok, if f(u) exists, and u=G(x)
dy/dx= d(f(u)/du * du/dx
so du/dx= G'
Now in practice.
dr/dtheta= 1/2 (1/sqrt(Theta*sinTheta))* d(theta*sinTheta)/dtheta
and d(theta*sinTheta)/dtheta= sinTheta+ theta*cosTheta.