mirror of
https://github.com/josdejong/mathjs.git
synced 2026-01-18 14:59:29 +00:00
43 lines
839 B
Markdown
43 lines
839 B
Markdown
<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
|
|
|
|
# Function dot
|
|
|
|
Calculate the dot product of two vectors. The dot product of
|
|
`A = [a1, a2, a3, ..., an]` and `B = [b1, b2, b3, ..., bn]` is defined as:
|
|
|
|
dot(A, B) = a1 * b1 + a2 * b2 + a3 * b3 + ... + an * bn
|
|
|
|
|
|
## Syntax
|
|
|
|
```js
|
|
math.dot(x, y)
|
|
```
|
|
|
|
### Parameters
|
|
|
|
Parameter | Type | Description
|
|
--------- | ---- | -----------
|
|
`x` | Array | Matrix | First vector
|
|
`y` | Array | Matrix | Second vector
|
|
|
|
### Returns
|
|
|
|
Type | Description
|
|
---- | -----------
|
|
number | Returns the dot product of `x` and `y`
|
|
|
|
|
|
## Examples
|
|
|
|
```js
|
|
math.dot([2, 4, 1], [2, 2, 3]); // returns number 15
|
|
math.multiply([2, 4, 1], [2, 2, 3]); // returns number 15
|
|
```
|
|
|
|
|
|
## See also
|
|
|
|
[multiply](multiply.md),
|
|
[cross](cross.md)
|