Table of contents
- 0. Review of Algebra(846)
- 1. Equations & Inequalities(1104)
- 2. Graphs of Equations(217)
- 3. Functions(524)
- 4. Polynomial Functions(334)
- 5. Rational Functions(99)
- 6. Exponential & Logarithmic Functions(453)
- 7. Systems of Equations & Matrices(489)
- 8. Conic Sections(140)
- 9. Sequences, Series, & Induction(151)
- 10. Combinatorics & Probability(86)
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
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.