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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Calculate the trace of a matrix: the sum of the elements on the main
diagonal of a square matrix.
```js
math.trace(x)
```
Parameter | Type | Description
--------- | ---- | -----------
`x` | Array &
Type | Description
---- | -----------
number | The trace of `x`
```js
math.trace([[1, 2], [3, 4]]) // returns 5
const A = [
[ ],
[-1, 2, 3],
[ ]
]
math.trace(A) // returns 6
```
[ ](diag.md)