beginner's question -- syntax related?

*To*: mathgroup at smc.vnet.net*Subject*: [mg13284] beginner's question -- syntax related?*From*: john at dlugosz.com (John M. Dlugosz)*Date*: Fri, 17 Jul 1998 03:18:40 -0400*Organization*: at home*Sender*: owner-wri-mathgroup at wolfram.com

This works: Plot[{3-Sqrt[5-4x-x^2],3+Sqrt[5-4x-x^2]}, {x, -5, 0}] This doesn't: ls := {3-Sqrt[5-4x-x^2],3+Sqrt[5-4x-x^2]}, {x, -5, 0} Plot[ls, {x,-5,0}] Somehow, the ls isn't getting taken as the list of two expressions. I tried both = and := when creating ls, with the identical effect. Clearly, I'm missing something about syntax. Can someone help me? --John