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What am I doing wrong with this code?

• To: mathgroup at smc.vnet.net
• Subject: [mg82519] What am I doing wrong with this code?
• From: sean_incali <sean_incali at yahoo.com>
• Date: Tue, 23 Oct 2007 05:32:30 -0400 (EDT)

I think I'm having a brain fart. Seriously...

Plot[{1/(1 + y^2), (1/y - 1)^(1/2)}, {y,  0, 5}]

What is wrong with that code? Maybe it's not solvable in mathematica?

I'm trying to plot nullclines of a system of ODEs. and those function
up there are them. I just can't get mathematica to plot them in the
same graph.

I get an error message saying...

>From In[22]:=
(1/y - 1)^(1/2)  is not a machine-size real number at y =
1.0000001666666667`.

Any help is appreciated.

sean

• Follow-Ups:
  • Re: What am I doing wrong with this code?
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
  • Re: What am I doing wrong with this code?
    • From: "Thomas Dowling" <thomasgdowling@gmail.com>