You may use the Cayley-Hamilton theorem for 2×2-matrices, A2−(a+d)A+(ad−bc)I2=0. This can be computed easily. Multiplying with A−1 we obtain ... ... <看更多>

You should definitely head warnings about singular matrices. Results in numerical linear algebra tend to break down as you move toward ... ... <看更多>

An introduction on system of linear equations can be found in 2.2. The inverse matrix can be used to solve the equation Ax=b by ... ... <看更多>