cos^3 = (1/2 cosx)(1+cos2x)

Please make the left match the right.

2 answers

RS = (1/2 cosx)(1 + 2cos^2 x -1)
= cos^3 x
= LS , if you meant cos^2 x
Compute for the third derivative of the given function for x = -5. The given angle is in radians.
y=12sinx+1x+2+2x