AP Calc

How do you find the derivative of
y=sin(x)*(sinx+cosx)

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asked by Anon
  1. just use the product rule

    If y = uv then
    y' = u'v + uv'
    where u=sinx and v=sinx+cosx

    y' = cosx(sinx+cosx) + sinx(cosx-sinx)
    = sin2x + cos2x

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    posted by Steve

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