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Math.expm1() - JavaScript | MDN

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Math.expm1() 函数返回 E^x - 1, 其中 x 是该函数的参数，E 是自然对数的底数 2.718281828459045。

参数 x 会被自动类型转换成 number 类型。

expm1 是 "exponent minus 1" 的缩写。

js

Math.expm1(-Infinity); // -1
Math.expm1(-1); // -0.6321205588285577
Math.expm1(-0); // -0
Math.expm1(0); // 0
Math.expm1(1); // 1.718281828459045
Math.expm1(Infinity); // Infinity

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