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To find the inverse of any arbitrary matrix like a b A c d Step-01: Evaluate the determinant of the matrix by cross multiplying the entries in the following way STRICTLY Determinant of A= A ad cb STEP-02: See if A 0 , then no further proceedings & we conclude that inverse cant be found But if A 0 , then it can found & proceed for next Step-03: Find the adjoint of ‘A’ as d b Adj ( A) c a Finally Step-04: Inverse of A = Inv( A) A1 1 1 d b Adj ( A) . A A c a