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2
3# Function cosh
4
5Calculate the hyperbolic cosine of a value,
6defined as `cosh(x) = 1/2 * (exp(x) + exp(-x))`.
7
8For matrices, the function is evaluated element wise.
9
10
11## Syntax
12
13```js
14math.cosh(x)
15```
16
17### Parameters
18
19Parameter | Type | Description
20--------- | ---- | -----------
21`x` | number &#124; BigNumber &#124; Complex &#124; Unit &#124; Array &#124; Matrix | Function input
22
23### Returns
24
25Type | Description
26---- | -----------
27number &#124; BigNumber &#124; Complex &#124; Array &#124; Matrix | Hyperbolic cosine of x
28
29
30## Examples
31
32```js
33math.cosh(0.5) // returns number 1.1276259652063807
34```
35
36
37## See also
38
39[sinh](sinh.md),
40[tanh](tanh.md)