Search WhatsApp Book Demo Class

Class 12

Adjoint, Inverse and Systems of Equations — Quiz

Five questions on the adjoint, the inverse and solving systems of equations. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. The adjoint of [3142]\begin{bmatrix} 3 & 1 \\ 4 & 2 \end{bmatrix} is
  2. Find A−1A^{-1} for A=[4311]A = \begin{bmatrix} 4 & 3 \\ 1 & 1 \end{bmatrix}.
  3. Which matrix is singular?
  4. Solve by the matrix method: 2x+y=52x + y = 5, x−y=1x - y = 1.
  5. The system x+2y=3x + 2y = 3, 2x+4y=72x + 4y = 7 is
Unanswered questions are marked wrong.

More practice

All practice quizzes