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Re: How to plot...
*To*: mathgroup at smc.vnet.net
*Subject*: [mg46055] Re: How to plot...
*From*: Bill Rowe <readnewsciv at earthlink.net>
*Date*: Tue, 3 Feb 2004 22:19:08 -0500 (EST)
*Sender*: owner-wri-mathgroup at wolfram.com
On 2/3/04 at 3:21 AM, oliver.kowalke at t-online.de (Oliver Kowalke)
wrote:
>I want to plot sin(x)/x on x=0.
>f3 := Which[x==0,1,0<x,Abs[Sin[x]/x]];
Your problem is the way you have defined f3. Define f3 as follows:
f3[x_]:=Which[x==0,1,0<x, Abs[Sin[x]/x]]
This should give you what you want although it will not be a plot of sin(x)/x
If I were to plot sin(x)/x I would define the function as follows
f[0.]:=1;
f[x_]:=Sin[x]/x;
Your function differs from sin(x)/x in two ways. It is always positive and it is not defined for x<0.
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