@0celo7 What difference does it make? You told Jaime that he shouldn't ever use a double integral, because nobody does. This is just profound nonsense, and you shouldn't give people crap advice like that.
@DawoodibnKareem Just because people do things in calculus books doesn't make it a good idea. I don't consider such things as a part of mathematical literature.
please, "ninja'd" should be restricted to when you actually post the message a split second later than somebody else posting the same message, and then you are the one who is ninja'd