Question

Tolong dong, kasihan nih bergadang demi try out :(

Answer 1

31. lim (sin 3x.cos 2x - sin 3x)/4x³
      = lim (sin 3x.(cos 2x - 1)/4x³
      = lim (sin 3x.(cos² x -sin² x - sin² x - cos² x)/4x³
      = lim (sin 3x.(-2sin² x)/4x³
      = 3.(-2)/4
      = -3/2...opsi B