- To: mathgroup at smc.vnet.net
- Subject: [mg32410] TrigExpand
- From: "Dave Snead" <dsnead6 at charter.net>
- Date: Sat, 19 Jan 2002 01:16:55 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Using Mathematica 4.1, what's going on with Trig Expand? TrigExpand[Cos[x]^2] returns Cos[x]^2 But TrigExpand[y+Cos[x]^2] returns 1/2 + y + Cos[x]^2/2 - Sin[x]^2/2 Why doesn't it just leave the argument alone and return y+Cos[x]^2 ?