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csviks
science forum beginner

Joined: 28 Mar 2006
Posts: 5

Posted: Fri Jul 07, 2006 8:58 pm    Post subject: help with symbolic matrix computation in maple

hi:

I have just started experimenting with and learning Maple and would
really appreciate some help/pointers on how to get Maple to do some
basic things.

for instance, I have two matrices, A and B with symbolic entries, of
size 3*3. Now, I would like to evaluate feasible values for a constant
c for a simple equation such as:

det(A) < c*det(B)

given a few assumptions such as
(1) all entries in A and B are non-zero,
(2) each entry in B is twice the corresponding entry in A,
(3) each row in A and B adds up to a given constant
....and some other elementary assumptions like these.

I tried to follow some online tutorials to incorporate these using
assume(m_{11} > 0 ) and so on...and defining the inequality as eqn :=
equation followed by solve(eqn, [c]) but it does not seem to work.

Can someone show me how to set up these kind of problems in maple?

thanks.

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