imo class 12 matrices

If A = [[x, 2], [2, x]] is a singular matrix, then x equals:

VAVidaara Admin Asked 6d ago 0 views 0 answers

If A = [[x, 2], [2, x]] is a singular matrix, then x equals:

  • A. ±2
  • B. 0
  • C. 1
  • D. 4

Answer: A) ±2

Explanation: A matrix is singular if its determinant is 0. det(A) = x² − 4 = 0 → x² = 4 → x = ±2.

0 Answers

Log in to post your own answer or join the discussion.

Discussion (0)

No comments yet — start the discussion.

← Back to all questions