>>14086743>Basically a need to import the excel sheet as an matrix and multuply that said matrix by an identity matrix with the same dimensionslol, wtf? identity times something else equals that something else.
also, it is not wise to compute explicit inverses to matrix systems of that size because of the terrible time complexity and because of numeric error concerns. you solve those systems iteratively with things like the General Minimum Residual (GRMES) or Conjugate Gradient (CG) on Normal equations.
python with numpy is probably your best bet. python is extremely popular and thus has a large community with lots of libraries that are often being maintained.
matlab/octave specializes in linear algebra, but should probably be avoided because you have to pay for matlab, and octave still has a long way to go to being a complete FOSS replacement to matlab. moreover, the community is largely made up of college kids (that's usually when you have access to it) and the language is asinine.
question, what are you doing, and why isn't anyone giving you guidance on what to use to solve your problem?