Re: Symbolic integrals simplification

*To*: mathgroup at smc.vnet.net*Subject*: [mg110157] Re: Symbolic integrals simplification*From*: "David Park" <djmpark at comcast.net>*Date*: Fri, 4 Jun 2010 08:44:59 -0400 (EDT)*References*: <5896993.1275653261559.JavaMail.root@n11>

Look at the "Integration Steps" and the "Step-by-step Integration with Student's Integral" examples at: http://blackbook.mcs.st-and.ac.uk/~Peter/djmpark/html/ which is kindly maintained for me by Peter Lindsay at the St Andrews Department of Mathematics and Statistics. Otherwise you can write rules that will keep trying to evaluate the integral but return it unevaluated when it can't. Or you can put it in HoldForm and then try to manipulate it. David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: guerom00 [mailto:guerom00 at gmail.com] Hello everyone, I have symbolic expressions like Integrate[a*f[t],{t,0,y}] and I want Mathematica to write it as a*Integrate[f[t],{t,0,y}] i.e. whatever does not depend explicitly on t is a constant which can be factored out of the integral. How can I do this ? TIA