The inverse of matrix [2 3; 1 2] is:
The inverse of matrix [2 3; 1 2] is:
- A. [2 −3; −1 2]
- B. [−2 3; 1 −2]
- C. [2 1; 3 2]
- D. [−2 −3; −1 −2]
Answer: A) [2 −3; −1 2]
Explanation: det = 4−3=1. adj = [2 −3; −1 2]. A⁻¹ = adj/1 = [2 −3; −1 2].
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