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September 23rd, 2018, 03:37 AM   #11
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Originally Posted by romsek View Post
what's the @{} about?
I believe it removes spacing from the environment.
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September 23rd, 2018, 04:18 AM   #12
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Originally Posted by Leonardox View Post
after finding A^-1 are we going to find x or b or both?
x is just a placeholder for any vector.

b must be given to you.
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