Code Analyzer: INV is slow and inaccurate

Question

When I try to calculate a matrix inverse using Matlab\'s inv() operation:

A = rand(10,10);
b = rand(10,1);

C = inv(A);
D = C*b;

I get the foll

Answer 1

Some additional information:

If you are to calculate

Ax = b

For many different b's, but with a constant A, you might want to pre-factorize A. That is:

[L U P] = lu(A);
x = (U \ (L \ ( P * b)));

Don't know about other fields, but this occurs frequently in power system engineering at least.