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 Last updated: Fri, 07 Jun 2013

# Lapack::eigenValues

(PECL lapack >= 0.1.0)

Lapack::eigenValuesThis function returns the eigenvalues for a given square matrix

### Descrierea

public static array Lapack::eigenValues ( array `\$a` [, array `\$left` [, array `\$right` ]] )

Calculate the eigenvalues for a square matrix, and optionally calculate the left and right eigenvectors.

### Parametri

`a`

The matrix to calculate the eigenvalues for.

`left`

Optional parameter - if an array is passed here, it will be filled with the left eigenvectors

`right`

Optional parameter - if an array is passed here, it will be filled with the right eigenvectors

### Valorile întoarse

Returns an array of arrays representing the eigenvalues for the array.

### Exemple

Example #1 Using Lapack::eigenValues():

``` <?php \$a = array(     array(-1.01,   0.86,  -4.60,  3.31,  -4.81  ),     array( 3.98,   0.53,  -7.04,  5.29,   3.55  ),     array( 3.30,   8.26,  -3.89,  8.20,  -1.51  ),     array( 4.43,   4.96,  -7.66, -7.33,   6.18  ),     array( 7.31,  -6.43,  -6.16,  2.47,   5.58  ), ); \$result = Lapack::eigenValues(\$a); ?> ```

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