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---
title: Vector dot product
id: 594810f028c0303b75339ad3
challengeType: 5
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videoUrl: ''
localeTitle: Producto punto vectorial
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---
## Description
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< section id = "description" > < p > Un vector se define como que tiene tres dimensiones como se representa por una colección ordenada de tres números: (X, Y, Z). < / p > < p > Tarea: < / p > < pre > < code > Write a function that takes any numbers of vectors (arrays) as input and computes their dot product.< / code > < / pre > < p > Su función debe devolver < code > null< / code > en entradas no válidas (es decir, vectores de diferentes longitudes). < / p > < p > < / p > < / section >
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## Instructions
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< section id = "instructions" >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
- text: puntoEl producto debe ser una función
testString: 'assert.equal(typeof dotProduct, "function", "dotProduct must be a function");'
- text: dotProduct () debe devolver null
testString: 'assert.equal(dotProduct(), null, "dotProduct() must return null");'
- text: 'dotProduct ([[1], [1]]) debe devolver 1.'
testString: 'assert.equal(dotProduct([1], [1]), 1, "dotProduct([[1], [1]]) must return 1.");'
- text: 'dotProduct ([[1], [1, 2]]) debe devolver null.'
testString: 'assert.equal(dotProduct([1], [1, 2]), null, "dotProduct([[1], [1, 2]]) must return null.");'
- text: 'dotProduct ([1, 3, -5], [4, -2, -1]) debe devolver 3.'
testString: 'assert.equal(dotProduct([1, 3, -5], [4, -2, -1]), 3, "dotProduct([1, 3, -5], [4, -2, -1]) must return 3.");'
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- text: < code > dotProduct(...nVectors)</ code > debe devolver 156000
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testString: 'assert.equal(dotProduct([ 0, 1, 2, 3, 4 ], [ 0, 2, 4, 6, 8 ], [ 0, 3, 6, 9, 12 ], [ 0, 4, 8, 12, 16 ], [ 0, 5, 10, 15, 20 ]), 156000, "< code > dotProduct(...nVectors)< / code > should return 156000");'
```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
function dotProduct() {
// Good luck!
}
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```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
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// solution required
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```
< / section >