Soal Ujian Matematika IPA Kelas 12
Tahun 2016Soal Pilihan Ganda
28. Hasil dari ∫cos22x sin2x dx = ...
A. 1/3 cos32x + c
B. 1/4 cos32x + c
C. 1/6 cos32x + c
D. -1/6 cos32x + c
E. -1/4 cos32x + c
Jawaban : D
dU = 2 dx
dx = 1/2 dU
∫cos22x sin2x dx
= ∫cos2U sinU dx
= 1/2 ∫cos2U sinU dU
= 1/2 . - 1/(2+1) cos2+1U + C
= - 1/6 cos3U + C
= - 1/6 cos32x + C
>>>Soal No.29
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