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13:14
Calculus isn't part of IMO syllabus though.
13:26
@soupless −1 > 0 implies 0 > 1 and so −1·0 > 0·1. But 0·x = 0·x+0·x+−(0·x) = (0+0)·x+−(0·x) = 0. So 0 > 0. Contradiction.
 
2 hours later…
15:02
@user21820 Thanks, seems like I'll have to do a lot of work. Also I wasn't expecting you to give sources for calculus, I think I've got some good books and it's not as hard as the oly subjects involved.

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