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Question 197956: I need help im a bit stuck:
Solve the matrix Eqauation:
[9 7] [9 2] =[72 99]
[11 9] X + [4 11] [77 130]
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Solve the matrix Eqauation:
[9 7] [9 2] =[72 99]
[11 9] X + [4 11] [77 130]
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These are a mess to show the work.
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You have an equation of the form
AX + B = C
where A,B, and C are 2x2 matrices
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You need to subtract B from both sides to get:
AX = [C-B]
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Then you need to multiply both sides by A^-1
to get
X = A^-1 [C-B]
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Hope that helps.
Cheers,
Stan H.
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