Как отыскать производную функции: а) y = cosx - 3/2x б)

1) f(х) = (sin^3 (2 - 3х)) = (2 - 3х) * (sin (2 - 3х)) * (sin^3 (2 - 3х)) = ((2) (3х)) * (sin (2 - 3х)) * (sin^3 (2 - 3х)) = (0 3) * (соs (2 - 3х)) * 3 * (sin^2 (2 - 3х)) = (-3) * (соs (2 - 3х)) * 3 * (sin^2 (2 - 3х)) = (-9) * (соs (2 - 3х)) * (sin^2 (2 - 3х).

2) f(х) = (соs^2 (х / 3)) = (х / 3) * (соs (х / 3)) * (соs^2 (х / 3)) = (1 / 3) * (-sin (х / 3)) * 2 * (соs (х / 3)) = (2 / 3) * (-sin (х / 3)) * (соs (х / 3)).