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OpenStudy (anonymous):
Can someone please look at the attachment and tell me if I did this correcty? My instructions are to "Solve the system of equations by finding the inverse of the matrix of coefficients". On the left side, I did it he way Sal Kahn showed on his video here ( http://www.khanacademy.org/video/matrices-to-solve-a-system-of-equations?playlist=Linear%20Algebra). On the right side, I was attempting to use our online matrix calculator to check the inverse, and it says that it is "not a square matrix". What did I do wrong?
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OpenStudy (anonymous):
OpenStudy (anonymous):
Everything you did is correct.
OpenStudy (anonymous):
Thank you,, looks like there was an error with the online calculator....I reloaded it and then it worked, lol. Was able to verify my solution.
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