Function expm1
Calculate the value of subtracting 1 from the exponential value.
For matrices, the function is evaluated element wise.
Syntax
math.expm1(x)
Parameters
Parameter |
Type |
Description |
x |
number | BigNumber | Complex | Array | Matrix |
A number or matrix to apply expm1 |
Returns
Type |
Description |
number | BigNumber | Complex | Array | Matrix |
Exponent of x |
Throws
Examples
math.expm1(2) // returns number 6.38905609893065
math.pow(math.e, 2) - 1 // returns number 6.3890560989306495
math.log(math.expm1(2) + 1) // returns number 2
math.expm1([1, 2, 3])
// returns Array [
// 1.718281828459045,
// 6.3890560989306495,
// 19.085536923187668
// ]
See also
exp,
log,
pow