Re: How create vertical line using Plot?
- To: mathgroup at smc.vnet.net
- Subject: [mg104260] Re: [mg104232] How create vertical line using Plot?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sun, 25 Oct 2009 01:07:54 -0400 (EDT)
- Reply-to: hanlonr at cox.net
Use Epilog and Line
f[x_] := (x - 1) (x - 2) (x - 3)
mm = x /. Solve[f'[x] == 0, x];
Plot[f[x], {x, 3/4, 13/4},
Epilog -> {Red,
AbsoluteDashing[{5, 5}],
Line[{{#, 0}, {#, f[#]}}] & /@ mm}]
Bob Hanlon
---- davef <davidfrick2003 at yahoo.com> wrote:
=============
How can I create a vertical line using the Plot command?
I can hack it using "y" = very big number times "x" but is there a
more elegant way to do it?
--
Bob Hanlon