Expanding complex expression
- To: mathgroup at smc.vnet.net
- Subject: [mg40647] Expanding complex expression
- From: spasmous at yahoo.com (spasmous)
- Date: Sat, 12 Apr 2003 03:08:44 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi, I don't know Mathematica at all, but I've heard it can expand complicated formulas and simplify them. I was wondering if someone could help me with a quick query. In particular I want to expand the following expression: a = (SUM(b[j] * c[j]))^2 / SUM(d[j]^2) where b[j] = e + f[j] and d[j] = e + g[j], and e >> g[j]. Note all the variables are complex, as in (x + i.y), and I want to expand the denominator to 2 or 3 terms. I've got pretty far doing it by hand... but well, after 10 pages of working it stops being fun. Thanks, Spas.