Question

CALCULUS LIMIT: is it legal to write something like this http://puu.sh/1agQw

Answer 1

Hmm I'm actually not sure art, when you deal with multivariable limits, you'll usually see them written like this:
\[\lim_{(x,t) \rightarrow (2^+,0^+)}\frac{ x }{ t }\]

Answer 2

aight thx bro ;)