<?php


< include __DIR__ . '/../classes/Bootstrap.php';



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




< $grid1 = [
<     [1, 3, 2],
<     [2, 3, 1],
< ];



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




< $grid2 = [
<     [1, 6],



> $grid = [


    [0, 1],

>     [-1, 0],
];
> ];

> 
$matrix = new Matrix\Matrix($grid1);
> $targetGrid = [

>     [-1],
$new = $matrix->directsum(new Matrix\Matrix($grid2));
>     [2],



< $matrix = new Matrix\Matrix($grid1);



> $matrix = new Matrix($grid);
> $target = new Matrix($targetGrid);
> 
> $decomposition = new QR($matrix);
> 
> $X = $decomposition->solve($target);
> 
> echo 'X', PHP_EOL;
> var_export($X->toArray());
> echo PHP_EOL;



< $new = $matrix->directsum(new Matrix\Matrix($grid2));



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



< var_dump($new);



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