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Math Help - Input n comes out with positive n

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    Last edited by Wykfo; September 24th 2008 at 09:51 AM. Reason: .
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Wykfo View Post
    Hey, I'm not sure where this should go but this seems to be the right place

    Can anybody tell me if there is a way to input n, which may be positive or negative, and get out n, which will be positive? I know that doesn't make perfect mathematical sense, but the general idea is:

    If n is 5, I'll get 5 out
    If n is -5, I'll get 5 out

    Thanks in advance
    use the absolute value function. f(n) = |n|

    or more explicitly, f(n) = \sqrt {n^2}

    and it does make perfect mathematical sense. The absolute value function is a very important function in math
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    Last edited by Wykfo; September 24th 2008 at 09:50 AM. Reason: .
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