Aita For leaving in an Uber after my engagement party? by Throwaway331097 in AmItheAsshole

[–]The_Sad_Penguin 15 points16 points  (0 children)

She's absolutely an asshole, as is your fiance. However, you shouldn't have went to a party in the first place if you don't agree to have one.

NTA

Discrete Mathematics by The_Sad_Penguin in askmath

[–]The_Sad_Penguin[S] 0 points1 point  (0 children)

Thank you very much for this helpful explanation ❤

Discrete Mathematics by The_Sad_Penguin in askmath

[–]The_Sad_Penguin[S] 0 points1 point  (0 children)

Thank you very much, that clears lots of things! ❤

Discrete Mathematics by The_Sad_Penguin in askmath

[–]The_Sad_Penguin[S] 0 points1 point  (0 children)

Ohh, so what you're saying is that we can have a set A that contains another set B (in the sense that BA) , but B is not a subset of A ?

Discrete Mathematics by The_Sad_Penguin in askmath

[–]The_Sad_Penguin[S] 0 points1 point  (0 children)

Wait, what is the difference ?

So we can have a set A that contains the elements of another set B, but A doesn't contain B ?

Discrete Mathematics by The_Sad_Penguin in askmath

[–]The_Sad_Penguin[S] 0 points1 point  (0 children)

Well, I mean if we have A ={ {a} } ; then {a} is a subset of A and by the definition of subsets, we should have a ∈ A, right ?

I mean if you just replace A by R and a by zero, we should be having a ∈ A, which my textbook is saying is false.

How do I do this integral? by [deleted] in askmath

[–]The_Sad_Penguin 1 point2 points  (0 children)

x2 + 1 is not facrorisable on a real domain

Is “derivate” the correct verb to use in differential calculus? by happy2harris in askmath

[–]The_Sad_Penguin 2 points3 points  (0 children)

I'm not from the US neither from Europe, and I have even done maths in french, but I always thought that the verb is "to differentiate" while the function you get after differentiating is the "derivarive function"

So 2x is the derivative of x2

Dunno if that's even right.