Simplify Trig expressions
- To: mathgroup at smc.vnet.net
- Subject: [mg12821] Simplify Trig expressions
- From: Tobias Oed <tobias at physics.odu.edu>
- Date: Fri, 12 Jun 1998 04:05:50 -0400
- Organization: Old Dominion University
- Sender: owner-wri-mathgroup at wolfram.com
Hi to all! Does anyone know why In[1]:= a=Factor[Cos[b]^2-1] Out[1]= (-1 + Cos[b]) (1 + Cos[b]) In[2]:= FullSimplify[a] // InputForm Out[2]//InputForm= -Sin[b]^2 In[3]:= FullSimplify[3 a] // InputForm Out[3]//InputForm= -3*Sin[b]^2 In[4]:= FullSimplify[c a] //InputForm Out[4]//InputForm= c*(-1 + Cos[b])*(1 + Cos[b]) fails in the last case ? (using Math ver 3.0 for HP-UX PA-RISC) any idea ? Cheers Tobias