@grogror don't know OtToMH, but that's a limit of the form infinity - infinity, there should be a version of Lopital that works
@grogror actually not true that x^2 + x ~= x^2 + x + 1/4, even w/infinitesimals, but it IS true that sqrt(x^2 + x) ~= sqrt(x^2 + x + 1/4).
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@grogror Right, there should be some factoring trick similar to the one in that example, like I said.
End of conversation
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.