55 lines
1.1 KiB
Markdown
55 lines
1.1 KiB
Markdown
<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
|
|
|
|
# Function expm1
|
|
|
|
Calculate the value of subtracting 1 from the exponential value.
|
|
For matrices, the function is evaluated element wise.
|
|
|
|
|
|
## Syntax
|
|
|
|
```js
|
|
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
|
|
|
|
Type | Description
|
|
---- | -----------
|
|
|
|
|
|
## Examples
|
|
|
|
```js
|
|
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](exp.md),
|
|
[log](log.md),
|
|
[pow](pow.md)
|