How to solve the matrix? Math help
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How to solve the matrix? Math help

[From: ] [author: ] [Date: 12-05-01] [Hit: ]
Good luck!-You need 2x2 to solve this.......
the question is l A l and says to evaluate the matrix which A= [ 1 2
3 4 ] what is this asking for? the absolute value?

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|A| is the determinant.

I'm assuming the matrix is A =
1 2
3 4

Because only square matrices have determinants.
In that case, |A| = 1*4 - 2*3 = 4 - 6 = -2. This the answer.



By the way, the formula I used is |A| = ad - bc for the matrix
a b
c d

Good luck!

-
You need 2x2 to solve this. The answer will be 1*4-2*3=-2
1
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