       Re: How come doesn't this work?

• To: mathgroup at smc.vnet.net
• Subject: [mg75748] Re: How come doesn't this work?
• From: dimitris <dimmechan at yahoo.com>
• Date: Wed, 9 May 2007 04:46:16 -0400 (EDT)
• References: <f1phau\$i6i\$1@smc.vnet.net>

In:=
Quit[]

In:=
taylor[n_][x_] := Normal[ArcTan[x] + O[x]^n]

In:=
f[x_] := ArcTan[x]

In:=
graph[n_] := Plot[Evaluate[{f[x], taylor[n][x]}], {x, -Pi, Pi},
PlotStyle -> {Red, Blue}, Frame -> {True, True, False, False},
FrameTicks -> {Range[-Pi, Pi, Pi/2], Range[-3, 3]}, PlotRange ->
{-3.1, 3.1}]

In:=
graph /@ Range

Dimitris

=CF/=C7 Anolethron =DD=E3=F1=E1=F8=E5:
> I know I have to put Evaluate In but it doesn't work still.
> Taylor[n_] := Normal[Series[ArcTan[x], {x, 0, n}]]
>
> F = ArcTan[x]
> Grafico[n_] =
> Plot[{F, Taylor[n]} // Evaluate, {x, -Pi, Pi},
> DisplayFunction -> \$DisplayFunction]

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