Question

find minors of 2 -3 4 7​

Answer 1

Step-by-step explanation:

Unit 2 - Algebra; 6 Marks ... and Inverse of Matrix, Applications of Determinants, Minors and Cofactors of Determinants and so on. ... NCERT Solutions for Class 12 Maths I Chapter

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Answer 2

The Minor of Matrix A = $\left[\begin{array}{ccc}7&4\\-3&2\end{array}\right]$ when matrix created by removing the row and column of the matrix where that specific element is located.

Given that,

We have to find the minor of the matrix where the matrix is $\left[\begin{array}{ccc}2&-3\\4&7\end{array}\right]$

We know that,

The matrix is $\left[\begin{array}{ccc}2&-3\\4&7\end{array}\right]$

So,

Minor of 2 = 7

(Element 2 is in the first row and the first column of the matrix after excluding we are left with element 7)

Minor of -3 = 4

(Element -3 is in the first row and the second column of the matrix after excluding we are left with element 4)

Minor of 4 = -3

(Element 4 is in the second row and the first column of the matrix after excluding we are left with element -3)

Minor of 7 = 2

(Element 7 is in the second row and the second column of the matrix after excluding we are left with element 2)

Therefore, the Minor of Matrix A = $\left[\begin{array}{ccc}7&4\\-3&2\end{array}\right]$

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