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PHP Version: 7.4.33
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Dir : ~/var/www/html/vendor/markbaker/matrix/examples/

View File Name : test.php

<?php

use Matrix\Matrix;
use Matrix\Decomposition\QR;

include __DIR__ . '/../vendor/autoload.php';

$grid = [
    [1, 2],
    [3, 4],
];

$targetGrid = [
    [-1],
    [-2],
];

$matrix = new Matrix($grid);
$target = new Matrix($targetGrid);

$decomposition = new QR($matrix);

$X = $decomposition->solve($target);

echo 'X', PHP_EOL;
var_export($X->toArray());
echo PHP_EOL;

$resolve = $matrix->multiply($X);

echo 'Resolve', PHP_EOL;
var_export($resolve->toArray());
echo PHP_EOL;