maths

integrate
-sinx/�ã4+cos^2x dx

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asked by Jess 1
  1. integrate
    -sinx/�square root 4+cos^2x dx

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    posted by Jess 1
  2. I assume you mean

    sin x/√(4+cos^2 x)

    let u = cos x
    du = -sin x dx

    and you have

    -∫1/√(4+u^2) du
    standard hyperbolic trig substitution is used to get

    -arcsinh(u/2)
    = -arcsinh(cosx / 2)

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    posted by Steve

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