Mathematics · Linear Algebra
Consider the matrix A = ⌈ a b ⌉ ⌊ c d ⌋. Which of the following statements about its inverse are CORRECT? (A) A-1 = (1det A)⌈ d -b ⌉ ⌊ -c a ⌋ (B) A-1 exists if and only if ad - bc ≠ 0 (C) (A-1)T = (AT)-1 (D) A · A-1 = 0 (null matrix) Choose the correct answer:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A, B, C and D
- 2A, C and D only
- 3B and D only
- 4A, B and C only✓
Correct answer
A, B and C only
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