10.5 Inverses of Matrices and Matrix Equations
Ideas in this lesson
- Inverse of a 2 × 2 matrix
- Solving systems with inverse matrices
Inverse of a 2 × 2 matrix · Worked example
Inverse of [2 0; 0 5]?
Answer: [0.5 0; 0 0.2]
Diagonal: reciprocals.
Answer: [0.5 0; 0 0.2]