947 B
947 B
Function usolve
Finds one solution of a linear equation system by backward substitution. Matrix must be an upper triangular matrix. Throws an error if there's no solution.
U * x = b
Syntax
math.usolve(U, b)
Parameters
| Parameter | Type | Description |
|---|---|---|
U |
Matrix, Array | A N x N matrix or array (U) |
b |
Matrix, Array | A column vector with the b values |
Returns
| Type | Description |
|---|---|
| DenseMatrix | Array | A column vector with the linear system solution (x) |
Throws
| Type | Description |
|---|
Examples
const a = [[-2, 3], [2, 1]]
const b = [11, 9]
const x = usolve(a, b) // [[8], [9]]