I am uploading three files. They all do the same thing with slightly different datasets. files 29 and 27 obtain rasonable solutions, but 24 does not.

Could you help me figure out what the problem is and how such problems can be identified -- so that I can make the necessary changes to them.

I have the same problem with other datasets.

Thanks.

Download 2031_29.mws
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<p><span><a href="http://mapleoracles.maplesoft.com:8080/maplenet/primes/worksheet/2031_29.mw">View 2031_29.mw on MapleNet</a> or <a href="http://beta.mapleprimes.com/files/2031_29.mw">Download 2031_29.mw</a><br />
<a href="http://beta.mapleprimes.com/viewfile/2575">View file details</a></span><span><a href="http://mapleoracles.maplesoft.com:8080/maplenet/primes/worksheet/2031_27.mw">View 2031_27.mw on MapleNet</a> or <a href="http://beta.mapleprimes.com/files/2031_27.mw">Download 2031_27.mw</a>

How can I check a large matrix and determine whether there are rows or columns that are multiples of one another?

When multiples exist, how can I determine which rows are multiples?

Thanks for your help.

I have a problem where I am performing some matrix operations and the resulting matrix is of rank n-1, where n is the order of the matrix. I want to solve M*x=x, where M is the resulting matrix. Since teh order of M is n-1, I keep getting zero values for all but two of the variables. What is the best way to get around this problem? I am a Maple novice. Please let me know how to do it in Maple. Thanks.

I have the following matrix problem that I am having trouble with. I have the following equation. A-1 * C * D * A * v = v A, C and D are of the same order. A & D are diagonal matrices. D is a diagonal matrix with values that are the row sums of matrix C. I get answers that are reasonable in some instances and zeros in others. I have uploaded a Maple file with what I am doing with some data. Would appreciate help. Thanks. Brian Download 2031_Matrix problem.mws