We need to find the bug in invert.lisp and
then delete the file...or does invert have
some advantage over ^^-1?
(%i1) randommatrix(n) := apply(matrix,
makelist(makelist(?random(100),k,1,n),j,1,n))$
Evaluation took 0.00 seconds (0.00 elapsed)
(%i2) m : randommatrix(10)$
Evaluation took 0.00 seconds (0.00 elapsed)
(%i3) invert(m)$
Evaluation took 3.60 seconds (3.60 elapsed)
(%i4) m^^-1$
Evaluation took 00.20 seconds (00.20 elapsed)
(%i5) m : randommatrix(11)$
Evaluation took 0.00 seconds (0.00 elapsed)
(%i6) invert(m)$
Evaluation took 12.40 seconds (12.40 elapsed)
(%i7) m^^-1$
Evaluation took 00.50 seconds (00.50 elapsed)
Barton