Increased Precision in Plot?
- To: mathgroup at smc.vnet.net
- Subject: [mg34684] Increased Precision in Plot?
- From: shollis at armstrong.edu (Selwyn Hollis)
- Date: Fri, 31 May 2002 04:30:16 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
The command
f[t_]=Nest[1 - Integrate[2s(#/.t->s),{s, 0, t}]&, Cos[t],
12]//Simplify
returns a fairly innocent-looking result. However, evaluation (or
plotting) of the result with default precision produces garbage; for
example:
In[1]:= f[.5]
Out[1]:= 0.875
In[2]:= N[f[1/2]]
Out[2]:= 0.625
In[3]:= N[f[1/2],17]
Out[3]:= 0.77880078307140487
My question is this: How can I get Plot to graph such a function with
increased precision, so that the graph isn't overwhelmed by noise?
Thanks in advance,
Selwyn Hollis