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Back to 11.7 Solving Systems with Inverses

11.7 Exercise 30

Avg difficulty 2.5

Show that matrix A A is the inverse of matrix B. B .

A=[ 1 2 3 4 0 2 1 6 9 ],B= 1 4 [ 6 0 −2 17 −3 −5 −12 2 4 ] A = \begin{bmatrix} 1 & 2 & 3 \\ 4 & 0 & 2 \\ 1 & 6 & 9 \end{bmatrix} , B = \frac{1}{4} \begin{bmatrix} 6 & 0 & −2 \\ 17 & −3 & −5 \\ −12 & 2 & 4 \end{bmatrix}

OpenStax Algebra and Trigonometry 2e, 11.7 Solving Systems with Inverses, exercise 30

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.