Re: estimation
- To: mathgroup at smc.vnet.net
- Subject: [mg108617] Re: estimation
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Thu, 25 Mar 2010 04:26:30 -0500 (EST)
Certainly the following does it:
z (-1/2 Exp[2 z] + 3/2 Exp[z])
But I suspect that's not really your question. Let me guess that you
really have z = x + I y and you want to evaluate the expression in a way
that collects the real and imaginary parts. In that case:
ComplexExpand[z (-1/2 Exp[2 z] + 3/2 Exp[z]) /. z -> x + I y]
On 3/24/2010 5:43 AM, Magdalena Moczydlowska wrote:
> Hi,
>
> Do you know how to estimate z (-1/2 exp(2*z)+3/2*exp(z)) where z is a
> complex number ( Re(z)<0).
>
> Thank You,
> Magdalena
>
--
Murray Eisenberg murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower phone 413 549-1020 (H)
University of Massachusetts 413 545-2859 (W)
710 North Pleasant Street fax 413 545-1801
Amherst, MA 01003-9305