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 Sep24 awarded Autobiographer Feb24 awarded Commentator Feb24 awarded Supporter Feb24 comment cancelling out before evaluation of variable Yes, my answer always has a polynomial form ... prior to being evaluated to a single value. Feb24 comment cancelling out before evaluation of variable Is there a way to determine that the property of a problem is best described using limits as opposed to absolute values? Feb24 awarded Student Feb24 asked cancelling out before evaluation of variable Jan14 awarded Editor Jan9 comment Why is Euclid's proof on the infinitude of primes considered a proof? @GustavoBandeira Just meant that if you were to ask a question in programmers stackoverflow that showed you didn't understand the concept you are asking about then you'd be downvoted and the qst would be closed. Here the response is constructive and educational. Jan9 comment Why is Euclid's proof on the infinitude of primes considered a proof? On programmer's stackexchange (you know where all the smart people roam), this qst would have received many downvotes. Obviously dealing with more evolved minds here. Dec20 comment Fundamental operations of mathematics Not sure the answers given here are correct. Jan22 comment Isolate middle value from $3\times 3$ matrix @JulianKuelshammer Thanks for the edit and links. Jan16 awarded Scholar Jan16 accepted Isolate middle value from $3\times 3$ matrix Jan16 comment Isolate middle value from $3\times 3$ matrix BTW, is there a special name for the 3X3 matrix where there is only a 1 in the middle value (row/column)? Jan16 comment Isolate middle value from $3\times 3$ matrix Bingo. Thanks John. Originally I tried doing it the other way, which is ABB, where yours is BAB. Jan16 comment Isolate middle value from $3\times 3$ matrix @Git Yes. Anything is allowed accept subtracting the above matrix that I specified. Jan16 comment Isolate middle value from $3\times 3$ matrix @StefanHansen I don't mind substraction, but it would have to be substraction with a constant matrix. In other words a matrix that can be reused for various 3x3 matrices. Jan16 asked Isolate middle value from $3\times 3$ matrix