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Math Help - Raising to the power of a fraction

  1. #1
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    Raising to the power of a fraction

    Hi it is probably easy for most of you but I am stuck on a question and I need to raise a number to the power of a fraction.
    How do I go about inputting it on a calculator I have a Ti 36 x.

    For instance 5 to the power of 2/5
    Last edited by Graeme; May 13th 2008 at 10:58 AM.
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     5^{\frac{2}{5}} would be the 5th root if you like of 2 then square this number..power 2. so:

    by 5th root i mean 2 to the power of ? =5


     (^{5}\sqrt{5})^{2}

    which would be 1.9036.. on a calc
    on my calc i press shift then 'x to the power button' and that usually does the trick..
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  3. #3
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    Hello,

    Quote Originally Posted by Graeme View Post
    Hi it is probably easy for most of you but I am stuck on a question and I need to raise a number to the power of a fraction.
    How do I go about inputting it on a calculator I have a Ti 36 x.

    For instance 5 to the power of 2/5
    Try to type :

    5^(2/5)
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  4. #4
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    x^{\dfrac{a}{b}}\implies x ^ \left( a \div b \right)
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  5. #5
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    Quote Originally Posted by Graeme View Post
    Hi it is probably easy for most of you but I am stuck on a question and I need to raise a number to the power of a fraction.
    How do I go about inputting it on a calculator I have a Ti 36 x.

    For instance 5 to the power of 2/5
    If I have the model of the calculator right type in
    5~x^y~(~2/5~)~\text{enter}

    -Dan
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  6. #6
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    So is the answer 1.9.
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Graeme View Post
    Thanks
    So is the answer 1.9.
    I'd use at least a few more decimal places: 1.9037.

    -Dan
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