If you have never used this page before, or if you need some review on the syntax for describing your integral, please be sure to check in the frame on the left. Once you have figured out how to ask your question, type or paste the integrand in the big box below:

If TILU just seems to be waiting, hit the stop button. This is an experimental server and is not always up.

If the default settings for options are acceptable with you, click on the activate button. Otherwise, change the entries in the boxes before clicking.

Before you send us some mathematics, you must tell us the language you are using. The choices include Common Lisp, Mathematica, and a third, we call ``Some random language I make up as I go along.'' Our log of old entries suggests most people use the last of these. In any case, Choose your language, and choose the limits of integration. To simplify your input task, we assume that you are always integrating with respect to the variable x.

We really would like to hear comments!

Select Language Common Lisp Mathematica Some random language I make up as I go along Indefinite Integral Zero to Infinity Zero to Pi Zero to Pi/2 Zero to 2 Pi Zero to 1 Minus Infinity to Infinity Minus Infinity to Zero G1 to Infinity

In using TILU, it is sometimes convenient to have restrictions on domains for parameters. In particular, some integrals make sense only when some names stand for positive integers. By default n, m, n0, n1, m0, m1 are meant to stand for positive integers only. You can override this default setting by editing the list of symbols to include exactly and only those that you want to match positive integers.

All other parameters are assumed to stand for arbitrary real numbers.

Prior to January, 1998 we processed about 7000 integrals. Currently (December, 2000) we are processing about 130 queries a day. Some of these are coming from a beta-test version of the new Macintosh graphing calculator. Coming to a Macintosh store near you soon.