Re: Stupid newbie question
- To: mathgroup at smc.vnet.net
- Subject: [mg33184] Re: Stupid newbie question
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Thu, 7 Mar 2002 02:23:34 -0500 (EST)
- References: <a61ump$goj$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Mike,
Clear[a, b, f]
f[x_] := 1 - Cos[E^(3(x/4))] (*square brackets*)
{a, b} = {-1, 1.5}
Plot[f[x], {x, a, b}] (*f[x] not f*)
We can also use
Clear[a, b, f]
fmla := 1 - Cos[E^(3(x/4))]
{a, b} = {-1, 1.5}
Plot[fmla, {x, a, b}]
but one way or another x must appear in the first position .
--
Allan
---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565
"Mike O'Leary" <Gremmie at cinci.rr.com> wrote in message
news:a61ump$goj$1 at smc.vnet.net...
> I can't seem to get a Plot working. I have all this typed in the
notebook:
>
> Clear[a, b, f]
> f[x_] := 1 - (Cos(\[ExponentialE]^(3x/4)))
> {a, b} = {-1, 1.5}
> Plot [f, {x, a, b}]
>
> I keep getting an error saying f is not a machine-size real number at x
> = -1. Any help is appreciated. Thanks.
>
>