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First row of a matrix A is [1,3,2]. If ...

First row of a matrix A is `[1,3,2]`. If
adj `A=[(-2,4,alpha),(-1,2,1),(3alpha,-5,-2)]`, then a det (A) is

A

`-2`

B

`-1`

C

0

D

1

Text Solution

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To solve the problem step by step, we will determine the determinant of matrix \( A \) using the information provided about its adjoint. ### Step 1: Define the matrix \( A \) We know that the first row of matrix \( A \) is given as: \[ A = \begin{bmatrix} 1 & 3 & 2 \\ A_{21} & A_{22} & A_{23} \\ ...
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CENGAGE ENGLISH-MATRICES-Multiple Correct Answer
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