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(PECL lapack >= 0.1.0)
Lapack::solveLinearEquation — Solve a system of linear equations
$a
, array $b
)This function computes the solution to the system of linear equations with a square matrix A and multiple right-hand sides B. Solves A * X = B for multiple B.
a
Square matrix of linear equations
b
Right hand side to be solved for
Matrix X
Example #1 Using Lapack::singularValues() :
<?php
$a = array(
array( 6.80 , - 6.05 , - 0.45 , 8.32 , - 9.67 ),
array(- 2.11 , - 3.30 , 2.58 , 2.71 , - 5.14 ),
array( 5.66 , 5.36 , - 2.70 , 4.35 , - 7.26 ),
array( 5.97 , - 4.44 , 0.27 , - 7.17 , 6.08 ),
array( 8.23 , 1.08 , 9.04 , 2.14 , - 6.87 ),
);
$b = array(
array( 4.02 , - 1.56 , 9.81 ),
array( 6.19 , 4.00 , - 4.09 ),
array( - 8.22 , - 8.67 , - 4.57 ),
array( - 7.57 , 1.75 , - 8.61 ),
array( - 3.03 , 2.86 , 8.99 ),
);
$result = Lapack :: solveLinearEquation ( $a , $b );
?>