The Math.exp()
static method returns e raised to the power of a number. That is
πΌπππ.ππ‘π(π‘)=ex\mathtt{\operatorname{Math.exp}(x)} = \mathrm{e}^x
Syntax
Math.exp(x)
Parameters
x
- : A number.
Return value
A nonnegative number representing ex, where e is the base of the natural logarithm.
Description
Because exp()
is a static method of Math
, you always use it as Math.exp()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Beware that e
to the power of a number very close to 0 will be very close to 1 and suffer from loss of precision. In this case, you may want to use Math.expm1 instead, and obtain a much higher-precision fractional part of the answer.
Examples
Using Math.exp()
Math.exp(-Infinity); // 0
Math.exp(-1); // 0.36787944117144233
Math.exp(0); // 1
Math.exp(1); // 2.718281828459045
Math.exp(Infinity); // Infinity