CUET · MATHS · PYQ PAPER 2025
Let \(A\) be any square matrix of order 3 and \(B=\left[\begin{array}{ccc}0 & -4 & 2 \\ 4 & 0 & 3 \\ -2 & -3 & 0\end{array}\right]\).Then the matrix \(A B A^T\) is a:
- A Symmetric matrix
- B Skew-symmetric matrix
- C Null matrix
- D Diagonal matrix
Answer & Solution
Correct Answer
(B) Skew-symmetric matrix
Step-by-step Solution
Detailed explanation
\(B=\left[\begin{array}{ccc}0 & -4 & 2 \\ 4 & 0 & 3 \\ -2 & -3 & 0\end{array}\right]\) \(B^T=\left[\begin{array}{ccc}0 & 4 & -2 \\ -4 & 0 & -3 \\ 2 & 3 & 0\end{array}\right] = -B\) \(B\) is a skew-symmetric matrix. Let \(C = A B A^T\).…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from MATHS
- The maximum value of \(z=2 x+3 y\) subject to the constraints \(3 x-3 y \geq 0,2 x+2 y \leq 12, x \geq 0, y \geq 0\) occurs at the point:CUET 2023 Easy
- The effective rate equivalent to a nominal rate of 12% compounded quarterly is:
(Given \((1.03)^4=1.1256\) )CUET 2025 Medium - A vector of magnitude 9, which is perpendicular to both the vectors \((4 \hat{i}-\hat{j}+8 \hat{k})\) and \((-\hat{j}+\hat{k})\) isCUET 2025 Easy
- Suppose that A, B and C are matrices of order \(m \times n, n \times 5\) and \(5 \times q\) respectively. The restriction on m, n and q so that AB - BC is defined areCUET 2025 Medium
- A spherical balloon has a variable radius. The rate at which its volume is increasing with respect to its radius when the radius is 5 cm is:CUET 2023 Hard
- The correct arrangement of electromagnetic spectrum in decreasing order of wavelength is :CUET 2024 Hard
More PYQs from CUET
- Identify " \(Y\) " in the following reaction:
CUET 2025 Hard - A circular loop is placed in the plane of the paper in a magnetic field B. A current is induced in the loop in an anticlockwise direction. This is because the magnetic field B is:CUET 2023 Hard
- The corner points of the bounded feasible region determined by the system of linear inequalities are (0, 0), (4, 0), (2, 4) and (0, 5). If maximum value of z = ax + by, where a, b > 0 occurs at both (2, 4) and (4, 0) thenCUET 2025 Easy
- The value of \(\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}(\sin |x|+\cos |x|) d x\) isCUET 2025 Medium
- Match List I with List II
LIST I LIST II A. Solvent used in perfumes I. Phenol B. Starting material for picric acid II. Glycerol C. Wood Spirit III. Methanol D. By product of soap industry used in cosmetics IV. Ethanol
Choose the correct answer:CUET 2023 Medium - Which compound of transition metal is used as a catalyst in the Contact Process?CUET 2025 Medium