Help with rules;
- To: mathgroup at smc.vnet.net
- Subject: [mg6014] Help with rules;
- From: Gadi Oron <oron at tremois.pmmh.espci.fr>
- Date: Tue, 11 Feb 1997 01:20:02 -0500
- Organization: Acces regional Ile-de-France (Univ. Paris VI/VII) - France
- Sender: owner-wri-mathgroup at wolfram.com
Hi there guys,
I'm using MM 2.2 under unix,
I have this expression
2 3 2
Sqrt[c2 - 6 c4] Sqrt[c2 - 6 c2 c4] Sqrt[-2 c4 + 5 c2 c6] Pi
Out[56]= --------------------------------------------------------------
2
Sqrt[2] c2 Sqrt[2 c4 - 5 c2 c6]
In[57]:= InputForm[%]
Out[57]//InputForm=
((c2^2 - 6*c4)^(1/2)*(c2^3 - 6*c2*c4)^(1/2)*(-2*c4^2 + 5*c2*c6)^(1/2)*Pi)/
(2^(1/2)*c2*(2*c4^2 - 5*c2*c6)^(1/2))
And i want to simplify it by replacing Sqrt[-2 c4^2 - 5 c2 c6]/Sqrt[-the
same] by I,
How come :
% /. Sqrt[x_]/Sqrt[-x]-> I does not work ??!!
Help!!!
Thanx
/\/\/\/\/\/\/\/\/\/\/\/>> Gadi ORON <<\/\/\/\/\/\/\/\/\/\/\/\/\
| EMAIL : oron at pmmh.espci.fr :::: oron at clipper.ens.fr |
| Homepage : http://pmmh.espci.fr/home/oron/WWW/personal.html |
| fido : 2:325/302.8 |
| Soyez braves - be brave. |
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/