PRC-2 · Chapter 4 · Question 53 of 60
To find the inverse of a 2x2 matrix, you must divide the 'Adjoint' of the matrix by its:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) Determinant
Explanation
Formula: A^-1 = (1 / |A|) × adj(A). This is why a matrix must be non-singular (|A| ≠ 0) to have an inverse.
More Linear Programming MCQs
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