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Scilab help >> Special Functions > erfinv

erfinv

逆誤差関数

呼び出し手順

y = erfinv(x)

引数

x

実数ベクトルまたは行列

y

(xと同じ大きさの)実数ベクトルまたは行列

説明

erfinv 関数はerf 誤差関数の逆, つまり,-1 ≤ x ≤ 1 となるような 任意のxについて erf(erfinv(x)) = x を計算します.

x = linspace(-0.99, 0.99, 100);
y = erfinv(x);
plot2d(x, y)

参照

  • cdfnor — 累積分布関数: 正規分布
  • erf — 誤差関数.
  • erfc — 相補誤差関数.
  • erfcx — スケーリング付き相補誤差関数.

参考文献

Milton Abramowitz and Irene A. Stegun, eds. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. New York: Dover, 1972.

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Last updated:
Mon Oct 01 17:40:31 CEST 2012