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Scilabヘルプ >> Special Functions > erfinv

# erfinv

### 呼び出し手順

`y = erfinv(x)`

### 引数

x

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.

### 例

```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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