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Math.asinh()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨2015年7月⁩.

Math.asinh() は静的メソッドで、数値の双曲線逆正弦（ハイパーボリックアークサイン）を返します。

\begin{aligned} 𝙼𝚊𝚝𝚑.𝚊𝚜𝚒𝚗𝚑 (𝚡) & = arsinh (x) = the unique y such that sinh (y) = x \\ = ln (x + \sqrt{x^{2} + 1}) \end{aligned}

試してみましょう

console.log(Math.asinh(1));
// 予想される結果: 0.881373587019543
console.log(Math.asinh(0));
// 予想される結果: 0
console.log(Math.asinh(-1));
// 予想される結果: -0.881373587019543
console.log(Math.asinh(2));
// 予想される結果: 1.4436354751788103

構文

Math.asinh(x)

引数

x: 数値です。

Math.asinh(-Infinity); // -無限大
Math.asinh(-1); // -0.881373587019543
Math.asinh(-0); // -0
Math.asinh(0); // 0
Math.asinh(1); // 0.881373587019543
Math.asinh(Infinity); // Infinity