what is the derivative of cos3x????????????????
d/dx (cos 3x) = d/dx (cos 3x) .d/dx (3x) (by using chain rule )
= (- sin 3x) (3)
= -3 sin 3x
what is the derivative of cos3x????????????????
d/dx (cos 3x) = d/dx (cos 3x) .d/dx (3x) (by using chain rule )
= (- sin 3x) (3)
= -3 sin 3x