Proofs (1 Viewer)

[=)(=]

I am lost, shouldn't it be a

 

[Masaken]

i thought it was d??
because that statement on the left can be rearranged to form the one on the right and vice versa for the same x values I think

 

[carrotsss]

It goes both ways so it’s an equivalence, and the “for all” symbol isn’t really meant for that

 

[=)(=]

the answer is d, but i was thinking that all the values match, e.g for every x you will get a certain y