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Math Help - Derivative using Wolfram Alpha

  1. #1
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    Derivative using Wolfram Alpha

    Why is Wolfram Alpha calculating this wrong:

    f(u)=(arcsinu)^{-1} then what is f'(\frac{1}{\sqrt2})=

    My calculator says f'(\frac{1}{\sqrt2})=-2.99547

    Why does Wolfram Alpha say -2.29 instead?
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  2. #2
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    Quote Originally Posted by Kataangel View Post
    Why is Wolfram Alpha calculating this wrong:

    f(u)=(arcsinu)^{-1} then what is f'(\frac{1}{\sqrt2})=

    My calculator says f'(\frac{1}{\sqrt2})=-2.99547

    Why does Wolfram Alpha say -2.29 instead?
    my calculator says -2.292636673
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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by Kataangel View Post
    Why is Wolfram Alpha calculating this wrong:

    f(u)=(arcsinu)^{-1} then what is f'(\frac{1}{\sqrt2})=

    My calculator says f'(\frac{1}{\sqrt2})=-2.99547

    Why does Wolfram Alpha say -2.29 instead?
    Please explain exactly what you think you mean by f(u)=(arcsinu)^{-1}.

    Also please give the exact command string you have given Wolfram Alpha.

    Derivative using Wolfram Alpha-gash.png

    CB
    Last edited by CaptainBlack; January 4th 2010 at 09:40 AM.
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