/sci/ - Science & Math

>starts proof-based book
>reads the entire chapter
>starts doing the exercises
>get stuck
>looks up the solution
>you need to use an inequality learned during calculus 2 or some bullshit like that that wasn't even mentioned in the chapter
Anyone else tired of this? Holy fuck, they should give us all the tools to solve the problems in the theory, but no, they just throw exercises where you can only solve by remembering stuff you did ages ago, this is honestly making me disappointed in maths. It's ok to make hard exercises, but it's frustrating when they make cheap artificially difficult problems like that.

>>11559185
I liked the topology proof more, even though it assumed what it was to prove. You were supposed to prove they are not equal. Don't waste my time ever again.

>>11559189
This is a valid proof. Thanks.

Phew. I was worried all the stuff I did this weekend was wrong. I simply forgot that the loop space functor is contravariant. Don't mix anorexia and maths. It is a combination both addictive and mistake inducing.

PS. I just realised the reason behind my self esteem problems. I don't believe in gods, and thus I don't believe in myself.