'Applies simplify to the elements of a matrix in place.
This is a shortcut for M.applyfunc(lambda x: simplify(x, ratio, measure))
See Also
sympy.simplify.simplify.simplify'

def simplify(self, ratio=1.7, measure=count_ops):

    for i in range(len(self._mat)):
        self._mat[i] = _simplify(self._mat[i], ratio=ratio, measure=measure)
