Re: how to solve this problem?
- To: mathgroup at smc.vnet.net
- Subject: [mg95117] Re: how to solve this problem?
- From: Thomas <t.isele at gmx.de>
- Date: Wed, 7 Jan 2009 04:06:36 -0500 (EST)
Put this at the beginning:
$Assumptions = {Element[x,Reals],Element[y,Reals]};
instead of Element[x,Reals] you can use x\[Element]Reals
Sometimes you must call Simplify in order to get every expression neatly simlified using that Assumption.