Matematika

Pertanyaan

Integral cos 4x cos 3x dx

1 Jawaban

  • ∫ cos 4x.cos 3x dx
    = ∫1/2(cos 7x + cos x) dx
    = 1/2(1/7.sin 7x + sin x) + C
    = 1/14.sin 7x + 1/2.sin x + C

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