Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

Assuming to be a real number is useless even in simple cases?

• To: mathgroup at smc.vnet.net
• Subject: [mg63945] Assuming to be a real number is useless even in simple cases?
• From: Roberto <roberto at pop.it>
• Date: Tue, 24 Jan 2006 01:30:31 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

In[1]:=
Assuming[x\[Element]Reals, Im[x]]

Out[1]=
Im[x]

Why it's not zero?

• Follow-Ups:
  • Re: Assuming to be a real number is useless even in simple cases?
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
  • Re: Assuming to be a real number is useless even in simple cases?
    • From: <bsyehuda@gmail.com>