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Developer Documentation
- Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
- Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
- PHP version: minimum PHP 7.3.0 Note: the minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is also supported.
Differences Between: [Versions 310 and 400] [Versions 311 and 400] [Versions 39 and 400]
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| File Size: | 376 lines (11 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 1 class
Functions:: (16 methods):
validateMatrix()
getAdjoint()
adjoint()
getCofactors()
cofactors()
getDeterminantSegment()
getDeterminant()
determinant()
diagonal()
antidiagonal()
identity()
inverse()
getMinors()
minors()
trace()
transpose()
| validateMatrix($matrix) X-Ref |
| Validates an array of matrix, converting an array to a matrix if required. return: Matrix The new matrix param: Matrix|array $matrix Matrix or an array to treat as a matrix. |
| getAdjoint(Matrix $matrix) X-Ref |
| Calculate the adjoint of the matrix return: Matrix param: Matrix $matrix The matrix whose adjoint we wish to calculate |
| adjoint($matrix) X-Ref |
| Return the adjoint of this matrix The adjugate, classical adjoint, or adjunct of a square matrix is the transpose of its cofactor matrix. The adjugate has sometimes been called the "adjoint", but today the "adjoint" of a matrix normally refers to its corresponding adjoint operator, which is its conjugate transpose. return: Matrix param: Matrix|array $matrix The matrix whose adjoint we wish to calculate |
| getCofactors(Matrix $matrix) X-Ref |
| Calculate the cofactors of the matrix return: Matrix param: Matrix $matrix The matrix whose cofactors we wish to calculate |
| cofactors($matrix) X-Ref |
| Return the cofactors of this matrix return: Matrix param: Matrix|array $matrix The matrix whose cofactors we wish to calculate |
| getDeterminantSegment(Matrix $matrix, $row, $column) X-Ref |
return: float param: Matrix $matrix param: int $row param: int $column |
| getDeterminant(Matrix $matrix) X-Ref |
| No description |
| determinant($matrix) X-Ref |
| Return the determinant of this matrix return: float param: Matrix|array $matrix The matrix whose determinant we wish to calculate |
| diagonal($matrix) X-Ref |
| Return the diagonal of this matrix return: Matrix param: Matrix|array $matrix The matrix whose diagonal we wish to calculate |
| antidiagonal($matrix) X-Ref |
| Return the antidiagonal of this matrix return: Matrix param: Matrix|array $matrix The matrix whose antidiagonal we wish to calculate |
| identity($matrix) X-Ref |
| Return the identity matrix The identity matrix, or sometimes ambiguously called a unit matrix, of size n is the n × n square matrix with ones on the main diagonal and zeros elsewhere return: Matrix param: Matrix|array $matrix The matrix whose identity we wish to calculate |
| inverse($matrix, string $type = 'inverse') X-Ref |
| Return the inverse of this matrix return: Matrix param: Matrix|array $matrix The matrix whose inverse we wish to calculate |
| getMinors(Matrix $matrix) X-Ref |
| Calculate the minors of the matrix return: array[] param: Matrix $matrix The matrix whose minors we wish to calculate |
| minors($matrix) X-Ref |
| Return the minors of the matrix The minor of a matrix A is the determinant of some smaller square matrix, cut down from A by removing one or more of its rows or columns. Minors obtained by removing just one row and one column from square matrices (first minors) are required for calculating matrix cofactors, which in turn are useful for computing both the determinant and inverse of square matrices. return: Matrix param: Matrix|array $matrix The matrix whose minors we wish to calculate |
| trace($matrix) X-Ref |
| Return the trace of this matrix The trace is defined as the sum of the elements on the main diagonal (the diagonal from the upper left to the lower right) of the matrix return: float param: Matrix|array $matrix The matrix whose trace we wish to calculate |
| transpose($matrix) X-Ref |
| Return the transpose of this matrix return: Matrix param: Matrix|\a $matrix The matrix whose transpose we wish to calculate |
