Equations & Inverse Routines

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inv

public static inv($a) : CArray

Compute the (multiplicative) inverse of a matrix.

Parameters

CArray|Array $a Input array.

Returns

CArray (Multiplicative) inverse of the matrix $a.

Examples

Example 1

$a = new CArray([[1., 2.], [3., 4.]]);
echo CArray::inv($a);

[[ -2.00000000   1.00000000 ]
 [  1.50000000  -0.50000000 ]]