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Re: x/x
*To*: mathgroup at smc.vnet.net
*Subject*: [mg66712] Re: x/x
*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
*Date*: Sat, 27 May 2006 21:03:12 -0400 (EDT)
*Organization*: The Open University, Milton Keynes, UK
*References*: <e593im$3ju$1@smc.vnet.net>
*Sender*: owner-wri-mathgroup at wolfram.com
Sinan Kapçak wrote:
> I plot the function f(x)=x/x in mathematica but I do not get the graph what i expect. Is this problem something about plot options?
>
Hi Sinan,
Knowing neither what you got nor what you expected, I still hope that
the following lines will be helpful:
In[1]:=
Clear[f]
f[x] = x/x
Out[2]=
1
In[3]:=
(* Error messages and empty graph *)
Plot[f[x], {x, -2, 2}];
In[5]:=
(* A straight line *)
Plot[1, {x, -2, 2}];
In[7]:=
Clear[f]
f[x_] = 1
(* A straight line *)
Plot[f[x], {x, -2, 2}];
Out[8]=
1
In[11]:=
Clear[f]
f[x_] := 1
(* A straight line *)
Plot[f[x], {x, -2, 2}];
In[15]:=
Clear[f]
f[x_] := x/x
(* A jagged line *)
Plot[f[x], {x, -2, 2}];
(* A less jagged line *)
Plot[f[x], {x, -2, 2}, PlotPoints -> 50];
(* A straight line *)
Plot[Evaluate[f[x]], {x, -2, 2}];
Best regards,
Jean-Marc
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