If $A=\begin{bmatrix}a & b \\c & d \end{bmatrix}$ then A is non-singular if

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If $A=\begin{bmatrix}a & b \\c & d \end{bmatrix}$ then A is non-singular if

E

Editor

Sep 18, 2022

If $A=\begin{bmatrix}a & b \\c & d \end{bmatrix}$ then A is non-singular if

Difficulty: Easy

A:

ab-cd=0

B:

ab+cd=0

C:

ad+cd=0

D:

ad-cd\neq 0

ID: 63273dbaca83163ac3a11cc7