# Function expm #

Compute the matrix exponential, expm(A) = e^A. The matrix must be square. Not to be confused with exp(a), which performs element-wise exponentiation.

The exponential is calculated using the Padé approximant with scaling and squaring; see “Nineteen Dubious Ways to Compute the Exponential of a Matrix,” by Moler and Van Loan.

## Syntax #

```
math.expm(x)
```

### Parameters #

Parameter | Type | Description |
---|---|---|

`x` |
Matrix | A square Matrix |

### Returns #

Type | Description |
---|---|

Matrix | The exponential of x |

## Examples #

```
const A = [[0,2],[0,0]]
math.expm(A) // returns [[1,2],[0,1]]
```