矩阵求逆。输入任意的矩阵，能判断该矩阵是否可逆，如果可逆，能给出逆阵，否则，提示该矩阵不存在逆矩阵。-Matrix inversion. Arbitrary input matrix, the matrix can judge whether or not reversible, if reversible, can be given against the array, otherwise, suggesting that the matrix inverse matrix does not