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Algebra (all content)

Course: Algebra (all content) > Unit 20

Lesson 12: Introduction to matrix inverses
Math
Algebra (all content)
Matrices
Introduction to matrix inverses
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Determine inverse matrices

CCSS.Math: HSA.REI.C.9
Google Classroom

Problem

A=[3−1−19]A=\left[\begin{array}{rr} 3 & -1 \\ -1 & 9 \end{array}\right] and B=[926126126326]B=\left[\begin{array}{rr} \dfrac{9}{26} & \dfrac{1}{26} \\\\ \dfrac{1}{26} & \dfrac{3}{26} \end{array}\right]
Are A and B inverses?
Choose 1 answer:
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