Given a complex square matrix M = A + i*B, its inverse is also a complex square matrix Z = X + i*Y, where A, B and X, Y are all real matrices. It is found that
M^-1 = Z or
(A + i*B)^-1 = (A + B*A^-1*B)^-1 - i*(B + A*B^-1*A)^-1
Provided that those matrices involved inversion must be nonsingular.
Feng Cheng Chang (2023). Complex matrix inversion by Real matrix inversion (https://www.mathworks.com/matlabcentral/fileexchange/49373-complex-matrix-inversion-by-real-matrix-inversion), MATLAB Central File Exchange. Retrieved .
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