Re: Difficulties with Re
- To: mathgroup at smc.vnet.net
- Subject: [mg98323] Re: Difficulties with Re
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Wed, 8 Apr 2009 02:42:46 -0400 (EDT)
On 4/6/09 at 5:05 AM, aaronfude at gmail.com (Aaron Fude) wrote: >Of the following two expressions, the first "works", while the >second doesn't. How does one make it work? >Assuming[x > 0 && y > 0, Re[Exp[x + I y]] // Simplify] >Assuming[x > 0 && y > 0, Re[Exp[(x + I y)^2]] // Simplify] Is the following adequate for you? In[9]:= Assuming[x > 0 && y > 0, Re[Exp[(x + y I )^2 // Expand]] // Simplify] Out[9]= E^(x^2 - y^2)*Cos[2*x*y]