Programmer Guide/Command Reference/EVAL/qdet: Difference between revisions
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{{DISPLAYTITLE:abs}} | {{DISPLAYTITLE:abs}} | ||
Compute the pseudo-derminant of the square matrix ''x''. | Compute the pseudo-derminant of the square matrix ''x''. | ||
;Usage: | ;Usage: <code>qdet(<var>x</var>)</code> | ||
:;<var>x</var>: a square matrix | :;<var>x</var>: a square matrix | ||
;Result: The pseudo-determinant (scalar) of ''x''. | ;Result: The pseudo-determinant (scalar) of ''x''. | ||
:Note: In linear algebra and statistics, the pseudo-determinant is the product of all non-zero eigenvalues of a square matrix. It coincides with the regular determinant when the matrix is non-singular. | :Note: In linear algebra and statistics, the pseudo-determinant is the product of all non-zero eigenvalues of a square matrix. It coincides with the regular determinant when the matrix is non-singular. | ||
;See also: [[../abs|abs]], [[../absv|absv]] | |||
[[../#Functions|<function list>]] | |||
Latest revision as of 11:33, 21 April 2011
Compute the pseudo-derminant of the square matrix x.
- Usage
qdet(x)- x
- a square matrix
