No simplification whatsoever



Hi all,

I have a weird situation:
If I do my evaluation by creating matrices and doing matrix multiplications as in the book it yields the correct (scalar) result. Unfortunately, carrying out the same matrix multiplications symbolically and therefore getting a function that has all the parameters in the matrices as parameters and a scalar result does not work as expected.

(With the matrix multiplication way I yield 10^-12 - 10^-15 when it should be zero which is fine due to floating-point arithmetics. With the function I yield things like 10^-2 - 10^-4 which is not close enough to zero.)

It looks like the expression from the matrix multiplication way is longer than with the function and I think Maxima is perhaps doing some aggregation/simplification automatically. Can I switch off all simplifications so that Maxima just prints out the expression as it is?

Best regards,
weaker