704 B
704 B
Function trace
Calculate the trace of a matrix: the sum of the elements on the main diagonal of a square matrix.
Syntax
math.trace(x)
Parameters
| Parameter | Type | Description |
|---|---|---|
x |
Array | Matrix | A matrix |
Returns
| Type | Description |
|---|---|
| number | The trace of x |
Throws
| Type | Description |
|---|
Examples
math.trace([[1, 2], [3, 4]]) // returns 5
const A = [
[1, 2, 3],
[-1, 2, 3],
[2, 0, 3]
]
math.trace(A) // returns 6