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Math Help - Decimal to Irrational Fraction

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    Decimal to Irrational Fraction

    I was wanting to know how I can use the graphing calculator to take a decimal and change it into an irrational fraction. Is there some sort of setup I can use...Thanks!
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    Quote Originally Posted by qbkr21 View Post
    I was wanting to know how I can use the graphing calculator to take a decimal and change it into an irrational fraction. Is there some sort of setup I can use...Thanks!
    Ummm...what is an "irrational" fraction?

    You don't really need to make the calculator do it, but if you want to try what I would suggest is to put the calcuator into "exact" mode, then enter your decimal, followed by "enter." It should give you back a fraction. The problem is that if you put in 0.333333 you will get back:
    \frac{333333}{1000000}

    There's no way I know of to get around the problem of repeating decimals.

    -Dan
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    Quote Originally Posted by qbkr21 View Post
    I was wanting to know how I can use the graphing calculator to take a decimal and change it into an irrational fraction. Is there some sort of setup I can use...Thanks!
    There is a way to find a repeating decimal.
    And I also found a way how find find decimals for irrationals of the form,
    \frac{a+\sqrt{b}}{c}
    But it might be too advanced it involves continued fractions and solving quadradic equations.
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