MediumLinear systems

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.4 Matrices and Linear Equations, #31 · Linear Algebra · Linear systems

For … and … write out … and factor its determinant into…

For $A = [a c b d]$ and $B = [e g f h]$ write out $A B$ and factor its determinant into $(a d - b c) (e h - f g)$ . Therefore $det (A B) = (det A) (det B)$ .

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.4 Matrices and Linear Equations, #31

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