Matrix plays an important role in advanced algebra and is the main research object and research tool.Many problems can be reduced to matrix and its operation,and matrix inversion is the core of matrix operation.The conventional methods of matrix inversion are summarized in this paper,including definition method,adjoint matrix method,elementary transformation method,undetermined element method,formula method and computer-aided inversion method.In addition,some other methods were given,such as matrix partition method,Hamilton-Cayley theorem,polynomial method and Sherman-Morrison formula,decomposition matrix inverse method,and auxiliary examples are elaborated.The study expandes the method of matrix inversion and provides more reference for learn-ing and teaching.
inverse matrixHamilton-Cayley theoremPolynomial methodSherman-Morrison formula