# Function multiply #

Multiply two or more values, `x * y`. For matrices, the matrix product is calculated.

## Syntax #

``````math.multiply(x, y)
math.multiply(x, y, z, ...)
``````

### Parameters #

Parameter Type Description
`x` number | BigNumber | bigint | Fraction | Complex | Unit | Array | Matrix First value to multiply
`y` number | BigNumber | bigint | Fraction | Complex | Unit | Array | Matrix Second value to multiply

### Returns #

Type Description
number | BigNumber | bigint | Fraction | Complex | Unit | Array | Matrix Multiplication of `x` and `y`

### Throws #

Type | Description —- | ———–

## Examples #

``````math.multiply(4, 5.2)        // returns number 20.8
math.multiply(2, 3, 4)       // returns number 24

const a = math.complex(2, 3)
const b = math.complex(4, 1)
math.multiply(a, b)          // returns Complex 5 + 14i

const c = [[1, 2], [4, 3]]
const d = [[1, 2, 3], [3, -4, 7]]
math.multiply(c, d)          // returns Array [[7, -6, 17], [13, -4, 33]]

const e = math.unit('2.1 km')
math.multiply(3, e)          // returns Unit 6.3 km
``````