Re: basic complex number question
- To: mathgroup at smc.vnet.net
- Subject: [mg72113] Re: basic complex number question
- From: "Roman" <rschmied at gmail.com>
- Date: Wed, 13 Dec 2006 06:38:31 -0500 (EST)
- References: <eljaq8$7fm$1@smc.vnet.net>
Daniel, You can use the ComplexExpand function, which assumes that all the variables in your analytic expression are real. For example, Re[Exp[I*x]] // ComplexExpand will give the correct result, Cos[x]. Roman. Daniel Mazur wrote: > My apologies for asking a question *this* basic, but here goes: > Functions Im[] and Re[] don't really evaluate imaginary and real part of > analytical expressions. What do I need to do to get this done? > Thanks, > Daniel