Newby Q: How to specify reals
- To: mathgroup at smc.vnet.net
- Subject: [mg110511] Newby Q: How to specify reals
- From: DBird <dbird at ieee.org>
- Date: Tue, 22 Jun 2010 07:00:12 -0400 (EDT)
Trying the following procedure:
In[41]:= {T1, T2, C1, C2, R1, R2, w} \[Element] Reals
Out[41]= (T1|T2|C1|C2|R1|R2|w)\[Element]\[DoubleStruckCapitalR]
In[42]:= x = R1 + I 1/(w C1)
Out[42]= R1+I/(C1 w)
In[43]:= Im[x]
Out[43]= Re(1/(C1 w))+Im(R1)
Question is, how do I specify the list {T1,T2,...} such that Im[x]
yield just R1.
I usually find I am missing something dumb...
Thanks,
Dave