?xdx on [??,?] is equal to 0. If you disagree, you are objectively wrong and should fuck off.
>inb4 b-b-but if x=2+v then ?(2+v)dv on [??,?] so ur wrong
then you'd have to change the limits of integration and it would be different infinities so that's irrelevant retard, l2hyperreal
also, .9... is not equal to 1
pic related, it's a 1fag