expm1.md (1076B)
1 <!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. --> 2 3 # Function expm1 4 5 Calculate the value of subtracting 1 from the exponential value. 6 For matrices, the function is evaluated element wise. 7 8 9 ## Syntax 10 11 ```js 12 math.expm1(x) 13 ``` 14 15 ### Parameters 16 17 Parameter | Type | Description 18 --------- | ---- | ----------- 19 `x` | number | BigNumber | Complex | Array | Matrix | A number or matrix to apply expm1 20 21 ### Returns 22 23 Type | Description 24 ---- | ----------- 25 number | BigNumber | Complex | Array | Matrix | Exponent of `x` 26 27 28 ### Throws 29 30 Type | Description 31 ---- | ----------- 32 33 34 ## Examples 35 36 ```js 37 math.expm1(2) // returns number 6.38905609893065 38 math.pow(math.e, 2) - 1 // returns number 6.3890560989306495 39 math.log(math.expm1(2) + 1) // returns number 2 40 41 math.expm1([1, 2, 3]) 42 // returns Array [ 43 // 1.718281828459045, 44 // 6.3890560989306495, 45 // 19.085536923187668 46 // ] 47 ``` 48 49 50 ## See also 51 52 [exp](exp.md), 53 [log](log.md), 54 [pow](pow.md)