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Thread: derivative HELP!! again

  1. October 1st 2012, 04:22 PM #1
    pnfuller
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    derivative HELP!! again

    find the derivative and simplify

    f(x) = xln(arctanx)

    would the answer be 2x4 + 2X2+ ln(arctanx)
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  2. October 1st 2012, 04:58 PM #2
    pickslides
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    Re: derivative HELP!! again

    Use the product rule, for y = v\times u \implies y' = vu'+uv'

    In your case v= x , u = \ln(\arctan x) use the chain rule to get u'
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