185k views
1 vote
This is so hard I don’t understand this pls help

This is so hard I don’t understand this pls help-example-1
User Ennui
by
8.1k points

1 Answer

4 votes

From the given question

There are given that the matrix.

Now,

To find the inverse of any matrix, first find their determinant.

Then,

According to the properties of the matrix:

If the determinant of any matrix is zero, then their inverse has undefined.

So,

From the determinant of the given matrix:


\begin{gathered} \begin{bmatrix}{4} & {8} & {} \\ {7} & {14} & \\ {} & {} & {}\end{bmatrix}=(14*4)-(8*7) \\ =56-56 \\ =0 \end{gathered}

The determinant of the given matrix is zero

So, their inverse has not been defined.

Hence, the correct option is A.

User Laury
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories