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Math Help - functions like the error function

  1. #1
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    functions like the error function

    I need to graph the error function (integrate 1/sqrt(2 pi) exp(-1/2 t^2) dt - Wolfram|Alpha) in my grapher. My grapher cannot graph integrals and does not have a special error function graphing option as in mathematica.

    Is there a good old fashioned basic function y=f(x) out there that graphs the same as the error function? I notice that the logistic function can be fuddled with to give an approximate fit, but not exact.

    Thanks
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by rainer View Post
    I need to graph the error function (integrate 1/sqrt(2 pi) exp(-1/2 t^2) dt - Wolfram|Alpha) in my grapher. My grapher cannot graph integrals and does not have a special error function graphing option as in mathematica.

    Is there a good old fashioned basic function y=f(x) out there that graphs the same as the error function? I notice that the logistic function can be fuddled with to give an approximate fit, but not exact.

    Thanks
    Abramowitz and Stegun page 299 7.1.25 to 7.1.28

    (google for it as Abramowitz and Stegun is available on-line.

    CB
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