Question

For the 1 -5, using the given. matrices find the value of its determinant:

|2 3 |
|-1 4|



Choose one answer.





a. 11







b. -22







c. 4







d. 5

Answer 1

i got 9 but its wrong obviously

Answer 2

Do you know how to find the determinant?

Answer 3

yes i think i have examples in front of me

Answer 4

\[A=\left[\begin{matrix}a & b \\ c & d\end{matrix}\right]\]
det(A)=a(d)-c(b)

can you apply this to your matrix
\[\left[\begin{matrix}2 & 3 \\ -1 & 4\end{matrix}\right]\]?

Answer 5

i did tht and i got 9