weird behavior when plotting multiple functions in 6.0

*To*: mathgroup at smc.vnet.net*Subject*: [mg76050] weird behavior when plotting multiple functions in 6.0*From*: Roman <rschmied at gmail.com>*Date*: Tue, 15 May 2007 04:59:14 -0400 (EDT)

Hello all: When I plot Plot[{Sin[x], Cos[x]}, {x, 0, 4*Pi}] I get two curves: one blue, one red. But when I do f[x_] = {Sin[x], Cos[x]}; Plot[f[x], {x, 0, 4*Pi}] both curves are blue. It is as if at some level Mathematica does not understand that I'm actually plotting two curves at a time, and uses the first color specification (blue) for both curves. This is particularly annoying when you want to play with plot styles, for example filling instructions, like Filling -> {1 -> -1, 2 -> 1} which works in the first example but not in the second one. Has anyone figured out a workaround for this one? Thanks! Roman.

**Follow-Ups**:**Re: weird behavior when plotting multiple functions in***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: weird behavior when plotting multiple functions in 6.0***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>