SOLUTION: What is the determinant of the following matrix? 3 1 -4 1 A. -13 B. 7 C. -1 D. 12

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Question 1066290: What is the determinant of the following matrix?
3 1
-4 1
A. -13
B. 7
C. -1
D. 12

Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website!
If you don't know, you're in the wrong class.

Answer by ikleyn(52817)   (Show Source):
You can put this solution on YOUR website!
.
On determinant of 2x2-matrices read the lesson
    - Determinant of a 2x2-matrix
in this site.

Read the definition of the determinant and how to calculate it.
After reading calculate your determinant.
And do not say that you don't know how to do it.

If after reading the lesson you are not able to compute the determinant, it means that you are in wrong class.