# Function exp

Calculate the exponent of a value. For matrices, the function is evaluated element wise.


## Syntax

```js
math.exp(x)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x`       | Number | Boolean | Complex | Array | Matrix | A number or matrix for which to calculate the exponent

### Returns

Type | Description
---- | -----------
Number | Complex | Array | Matrix | Exponent of `x`


## Examples

```js
var math = mathjs();

math.exp(2);                  // returns Number 7.3890560989306495
math.pow(math.e, 2);          // returns Number 7.3890560989306495
math.log(math.exp(2));        // returns Number 2

math.exp([1, 2, 3]);          // returns Array [
                              //   2.718281828459045,
                              //   7.3890560989306495,
                              //   20.085536923187668
                              // ]
```


## See also

[pow](pow.md),
[log](log.md)