curious - Hewlett Packard

This is a discussion on curious - Hewlett Packard ; Hi, I'm just curious why my HP50g won't reduce 81^(1/3)+24^(1/3)+192^(1/3) to 9*3^(1/3)? Am I missing something? Thank you...

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  1. curious

    Hi,
    I'm just curious why my HP50g won't reduce 81^(1/3)+24^(1/3)+192^(1/3)
    to 9*3^(1/3)? Am I missing something?

    Thank you


  2. Re: curious

    > I'm just curious why my HP50g won't reduce 81^(1/3)+24^(1/3)+192^(1/3)
    > to 9*3^(1/3)? Am I missing something?


    The 50 really likes converting things to factors of e and ln. It
    won't auto simplify powers with values of e and ln. If I remember
    right from when I was struggling with this a long time ago, the
    general steps for reducing this type of problem is to use the REWRITE
    menu. I hope you aren't using choose menus and using RPN or this is
    quite a long procedure.

    LS-6 (left shift), F4 (REWRITE menu), NXT, SIMPLIFY, NXT, NXT,
    EXP2POW, EVAL

    This will do some autosimplifcation, change the values of LN and E
    into powers, then it will reduce.

    TW


  3. Re: curious

    On Jun 25, 9:38 am, TW wrote:
    > > I'm just curious why my HP50g won't reduce 81^(1/3)+24^(1/3)+192^(1/3)
    > > to 9*3^(1/3)? Am I missing something?

    >
    > The 50 really likes converting things to factors of e and ln. It
    > won't auto simplify powers with values of e and ln. If I remember
    > right from when I was struggling with this a long time ago, the
    > general steps for reducing this type of problem is to use the REWRITE
    > menu. I hope you aren't using choose menus and using RPN or this is
    > quite a long procedure.
    >
    > LS-6 (left shift), F4 (REWRITE menu), NXT, SIMPLIFY, NXT, NXT,
    > EXP2POW, EVAL
    >
    > This will do some autosimplifcation, change the values of LN and E
    > into powers, then it will reduce.
    >
    > TW


    Very interesting. Thank you!


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