Question

\[int{-infty}{infty}e^{xy}\]

Answer 1

\[\int{}{}e^{xy}\]

Answer 2

\[\int\limits_{-\infty}^\infty e^{xy}\]

Answer 3

integral with respect to?

Answer 4

lol it was a joke hehe you've never seen thes tshirts?

Answer 5

oh,

Answer 6

http://www.cafepress.com/ultrageek/2802188

Answer 7

how'd that DE end up

Answer 8

haha nicee

Answer 9

im still working thought the detailes

Answer 10

haha oooo DE problems yay!