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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.5 Linear Algebra, #23 · Linear Algebra · Matrices

Which four entries of … give the upper left corner entry …

This problem uses the matrices A, B, C.

Which four entries of $A$ give the upper left corner entry $p$ of $A^{- 1}$ , after dividing by $D = det A$ ? Which four entries of $A$ give the entry $q$ in row 1, column 2 of $A^{- 1}$ ? Find $p$ and $q$ .

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.5 Linear Algebra, #23

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