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4 votes
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241 views

Elementary examples for non-reversible logical steps

While listening to recordings of Calculus $I$ lectures, I noticed that some students get confused between showing that "some object $x$ is a solution", and showing that "every (possible) solution mus …
Asaf Shachar's user avatar
10 votes
1 answer
374 views

How to explain the concept "Without loss of generality" (through examples)?

The other cases are sufficiently similar to the one presented that proving them follows by essentially the same logic, or follows by a symmetry argument. …
Asaf Shachar's user avatar