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Re: efficiently multiplying matrices
Posted:
Nov 10, 2004 10:19 AM


Peter Boettcher wrote: > See NDFUN: > <<a href="http://www.mit.edu/~pwb/matlab/">http://www.mit.edu/~pwb/matlab/</a>>
Thanks for your hints! It turned out that my problem could be reduced to the 2nd column vektor of the solution  so I actually only needed to calculate A*x (x = 2nd column vector of B). This was quite easy to do by creating a sparse diagonal matrix of x.



