Re: Generating a function from a series
- To: mathgroup at smc.vnet.net
- Subject: [mg65375] Re: [mg65354] Generating a function from a series
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 29 Mar 2006 06:34:14 -0500 (EST)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Use Normal
f[x_]=Sin[x];
fs[x_] = Normal[Series[f[x],{x,0,5}]];
Plot[{f[x],fs[x]},{x,0,Pi},PlotStyle->{Blue,Red}];
Bob Hanlon
>
> From: Geico Caveman <spam at spam.invalid>
To: mathgroup at smc.vnet.net
> Subject: [mg65375] [mg65354] Generating a function from a series
>
> How does one generate a function from a series ?
>
> For example :
>
> sf=Series[f(x),{x,0,3}];
> fs[y_]=sf/.x->y
>
> Now this leaves that pesky O(()^4) term in the function definition,
> rendering the function useless for plots etc. How do I get rid of it ?
>
>