Question
Asked Sep 18, 2019
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find the matrix X if 

2 1
-1 3

X=

2 4
1 3
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Expert Answer

Step 1

Here the given matrix is A X = B and the solution of the given matrix is X = A-1 B

2 4
2
Let A
1
and B
1 3
-1 3
2 1
2 4
X=
1 3
-1 3
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2 4 2 Let A 1 and B 1 3 -1 3 2 1 2 4 X= 1 3 -1 3

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Step 2

 And the solution for the X is: X = A-1 B

2
2
X =
1
1 3
-1 3
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2 2 X = 1 1 3 -1 3

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Step 3

First, we need to find the inverse ...

-1]
11
1
3
1
-1 3
2
det
-11
13
2
7
2
7
Il
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-1] 11 1 3 1 -1 3 2 det -11 13 2 7 2 7 Il

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