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CD-ROM Today - The Disc! 5
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CD-ROM Today - The Disc (Issue 5)(November 1994).ISO
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backsub
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1994-09-21
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backsub:
Syntax: backsub ( LIST, B )
Description:
The backsub function computes the solution to the set of
linear equations described by:
A * X = B
The 1st argument to backsub (LIST) is the result from
`factor(A)'. The second argument to backsub is the matrix B. B
can contain multiple right hand sides.
Backsub returns a matrix X which contains the solution(s) to
the aforementioned equations.
Backsub utilizes the LAPACK subroutines DGETRS or ZGETRS.
Example: X = backsub (factor (A), B);
See Also: factor, inv, solve