After first mid-term, we started proof.
Proof is soooooo hard. It’s hard to find the way to prove an implication. Also
structure of proof is hard to write. When I see a proof question, I always do
not know what to write to start a proof and what should I proof. Also there was
an interesting things happened when I went to Montreal during the reading week. One
night, I was in the hotel with my roommate and we both doing our homework. When
she saw my assignment two, she said:” is this your homework? Why you guys need
to prove those questions? They are obviously to see the answer. Look, when x
< y and they both are real number, of course there is a real number that
greater than x and less than y. You do not need to prove.” LoL
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