Question:
If, A is a square matrix of order 3 and |A| = -2 then. \(|-2 \ A^{-1}|\) is:
If, A is a square matrix of order 3 and |A| = -2 then. \(|-2 \ A^{-1}|\) is:
Updated On: May 18, 2024
- -4
- 4
- 8
- 2
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The correct option is (B): 4
Was this answer helpful?
0
0
Top Questions on Adjoint and Inverse of a Matrix
- If A is an invertible matrix, such that A2 - A + I = 0, then the inverse of A is :
- CUET (UG) - 2023
- Mathematics
- Adjoint and Inverse of a Matrix
- If \(A=\begin{bmatrix} x & 1 \\ 1 & 0 \end{bmatrix}\)and A = A-1, then the value of x is :
- CUET (UG) - 2023
- Mathematics
- Adjoint and Inverse of a Matrix
- If A is a square matrix of order 3 and |A|=5, then |adj(adjA)| is:
- CUET (UG) - 2023
- Mathematics
- Adjoint and Inverse of a Matrix
- If A is a square matrix of order 3 such that |A|= 2, then the value of |adj(adj A)| is:
- CUET (UG) - 2023
- Mathematics
- Adjoint and Inverse of a Matrix
- If \(A=\begin{bmatrix} -2&6\\-5&-1\end{bmatrix}\) then \(A^{-1}\) is:
- CUET (UG) - 2023
- Mathematics
- Adjoint and Inverse of a Matrix
View More Questions
Questions Asked in CUET exam
- Who devised the concept of Intelligence Quotient (IQ)?
- CUET (UG) - 2024
- Psychological attributes
- As per data collected in 2011, arrange the following Indian states in terms of child sex-ratio from lowest to highest:
(A) Punjab
(B) Haryana
(C) Tamil Nadu
(D) Sikkim
Choose the correct answer from the options given below:- CUET (UG) - 2024
- Social Inequality and Exclusion
- A molecule X associates in a given solvent as per the following equation:
X ⇌ (X)n
For a given concentration of X, the van’t Hoff factor was found to be 0.80 and the
fraction of associated molecules was 0.3. The correct value of ‘n’ is:- CUET (UG) - 2024
- Solutions
- If \(A = \begin{bmatrix} 3 & 2 \\ -1 & 1 \end{bmatrix} \quad \text{and} \quad B = \begin{bmatrix} -1 & 0 \\ 2 & 5 \\ 3 & 4 \end{bmatrix},\)then \((BA)^T\) is equal to:
- CUET (UG) - 2024
- Matrices
- Two resistances of 100 \(\Omega\) and 200 \(\Omega\) are connected in series across a 20 V battery as shown in the figure below. The reading in a 200 \(\Omega\) voltmeter connected across the 200 \(\Omega\) esistance is _______.
Fill in the blank with the correct answer from the options given below- CUET (UG) - 2024
- Current electricity
View More Questions