7. Systems of Equations & Matrices
Determinants and Cramer's Rule
7. Systems of Equations & Matrices
Determinants and Cramer's Rule: Study with Video Lessons, Practice Problems & Examples
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85PRACTICE PROBLEM
Find the multiplicative inverse of the matrix shown by using the formula for A-1. Also, verify that AA-1 = I2 and A-1A = I2, where I2 is a multiplicative identity matrix of order 2.
Find the multiplicative inverse of the matrix shown by using the formula for A-1. Also, verify that AA-1 = I2 and A-1A = I2, where I2 is a multiplicative identity matrix of order 2.