matrices.py:
matrices.py:

Introduced a new function _find_reasonable_pivot_naive() that
searches within a column for a suitable pivot.
This function has the same input and output signature as
_find_reasonable_pivot(), however it does not necessarily call
simplify(), which can be costly.

Refactored LUdecomposition_Simple() to use
_find_reasonable_pivot_naive().

kaushik94/sympy,kaushik94/sympy,kaushik94/sympy