mathjs
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Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif
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# Function or
Logical `or`. Test if at least one value is defined with a nonzero/nonempty value.
For matrices, the function is evaluated element wise.
## Syntax
```js
math.or(x, y)
```
### Parameters
Parameter | Type | Description
--------- | ---- | -----------
`x` | number | BigNumber | Complex | Unit | Array | Matrix | First value to check
`y` | number | BigNumber | Complex | Unit | Array | Matrix | Second value to check
### Returns
Type | Description
---- | -----------
boolean | Array | Matrix | Returns true when one of the inputs is defined with a nonzero/nonempty value.
## Examples
```js
math.or(2, 4) // returns true
a = [2, 5, 0]
b = [0, 22, 0]
c = 0
math.or(a, b) // returns [true, true, false]
math.or(b, c) // returns [false, true, false]
```
## See also
[and](and.md),
[not](not.md),
[xor](xor.md)