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derivatives

posted by on .

x^2cosx-2xsinx-2cosx

  • derivatives - ,

    I assume that you want the derivative, since you titles your post that way.

    if y = x^2cosx-2xsinx-2cosx
    dy/dx = (x^2)(-sinx) + 2x cosx - 2x(-cosx) - 2sinx + 2sinx
    = -x^2( sinx) + 4x( cosx)

    etc if needed

  • derivatives - oops - ,

    d/dx sinx = cosx

  • derivatives - ,

    yup!
    sloppiness on my part

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