Matematika

Pertanyaan

integral x pangkat dua cos 2x d

1 Jawaban

  • ∫x² cos2x

    u = x²
    u' = 2x

    v = cos2x
    v' = sin2x . 2
    v' = 2sin2x

    ∫x² cos2x
    = u'v + v'u
    = 2x . cos2x + 2sin2x . x²
    = 2x cos2x + 2x² sin2x
    = 2x (cos2x + xsin2x)

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