Posted by hailey on .
y=cos^3(12theta)
find derivative using chain rule

calculusderivatives 
Count Iblis,
y = x^3
x = cos(z)
z = 12 teta
dy/dtheta =
(dy/dz) (dz/dtheta) =
(dy/dx) (dx/dz) (dz/dtheta) =
3 x^2 [sin(z)] 12 =
36 cos^2(z) sin(z) =
36 cos^2(12 theta) sin(12 theta)