Question

Mohon bantuannya no 1 dan 2. cepatnya

Answer 1

Yg 2 dulu..
∫ cos⁴ 2x sin 2x dx

u = cos 2x --> du = -2 sin 2x dx
sin 2x  dx = -1/2 du

∫ cos⁴ 2x sin 2x dx = -¹/₂ ∫u⁴ du
= - ⁻¹/₂ (¹/₅)(u)⁵ + c
= - ¹/₁₀ (cos⁵ 2x ) + c