mathjs/docs/reference/functions/sqrt.md

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

# Function sqrt

Calculate the square root of a value.

For matrices, the function is evaluated element wise.


## Syntax

```js
math.sqrt(x)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | Number | Boolean | Complex | Array | Matrix | null |  Value for which to calculate the square root.

### Returns

Type | Description
---- | -----------
Number | Complex | Array | Matrix |  Returns the square root of `x`


## Examples

```js
math.sqrt(25);                // returns 5
math.square(5);               // returns 25
math.sqrt(-4);                // returns Complex -2i
```


## See also

[square](square.md),
[multiply](multiply.md)


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