CUET Mathematics - Let A and B be two non-singular, square matrices of same order, and A. (AB)^-1 = B^-1 * A^-1 B. (A+B)^-1 = B^-1 + A^-1 C. adj. A = |A| * A^-1 D. det(A^-1) = [det A]^-1 Choose the correct answer from the options given below | PYQs + Solutions

CUET Mathematics 2022 10 Aug Shift 1

Algebra

Easy

A and B only

B and C only

B and D only

A, C and D only

✅ Correct Option: 4

Related questions:

30 May Shift 1

Let $A = \begin{bmatrix} 2 & -1 & 3 \\ 1 & 2 & -1 \\ 4 & 1 & 2 \end{bmatrix}$ . $M_{ij}$ and $A_{ij}$ respectively denote the minor and cofactor of an element $a_{ij}$ of matrix $A = [a_{ij}]$

(A) $M_{23} = 6$

(B) $A_{22} = -8$

(D) $M_{32} = -5$

Choose the correct answer from the options given below:

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Let A be a square matrix of order 3 then |3A| is equal to

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If $A = \begin{bmatrix} a & a & a \\ o & a & a \\ o & o & a \end{bmatrix}$ , then $|adj A|$ is equal to

CUET Mathematics 2022 10 Aug Shift 1 PYQs

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