Jawabanmu

2014-05-16T08:31:01+07:00
F(x) = Sin²(8x-2r)
     = {Sin(8x-2r)}²
f'(x) = 2{Sin(8x-2r)}(Cos(8x-2r))(8)
       = 16Sin(8x-2r)Cos(8x-2r)
atau
f'(x) = 8{2Sin(8x-2r)Cos(8x-2r)}
       = 8{Sin2(8x-2r)
       = 8Sin(16x-4r)