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March 28, 2017

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Derivative of y=in((e^-2x)(cos4x))

  • calculus - ,

    y = ln((e^(-2x))(cos4x))
    = ln(e^-2x) + ln(cos 4x)
    = -2x + ln(cos 4x)

    y' = -2 - 4sin4x/cos4x
    = -2 - 4tan4x

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