What is the inverse of the matrix ?

Answer and explanation

Correct answer: A.

  1. Step 1: Compute determinant: .
  2. Step 2: Apply inverse formula for matrix: .
  3. Step 3: Swap diagonal elements () and negate off-diagonals ().
  4. Step 4: .
Answer
[[2, -1], [-5, 3]].
Why not the others: The option with all signs reversed (first row ) negates the entire matrix; the option with first row fails to swap diagonals; the option with first row fails to negate off-diagonals.

Practise more Functions, Logarithms and Exponential Models.

Free questions with an explanation for every one, and full timed EmSAT Achieve (UAE) mock tests.

All Functions, Logarithms and Exponential Models questionsTake a mock test

More Functions, Logarithms and Exponential Models questions