Manipulate Series Expansions

*To*: mathgroup at smc.vnet.net*Subject*: [mg112976] Manipulate Series Expansions*From*: Daniel <bridges2 at gmail.com>*Date*: Sat, 9 Oct 2010 06:33:24 -0400 (EDT)

I'm new to Mathemtica and have been searching the net for a while regarding using Manipulate to compare a series expansion to the original function, but haven't found an adequate solution to my errors. Why doesn't this work: Manipulate[ Plot[{Normal[Series[Sin[x], {x, 0, n}]], Sin[x]}, {x, -10 Pi, 10 Pi}, PlotRange -> 2], {n, 1, 100, 1}] I can do this to make it work as intended: p[x_, n_] := Normal[Series[Sin[y], {y, 0, n}]] /. y -> x Manipulate[ Plot[{p[x, n], Sin[x]}, {x, -10 Pi, 10 Pi}, PlotRange -> 2], {n, 1, 100, 1}] Any information would be helpful.