Re: Plotting a x,y,z function
- To: mathgroup at smc.vnet.net
- Subject: [mg98675] Re: Plotting a x,y,z function
- From: dh <dh at metrohm.com>
- Date: Thu, 16 Apr 2009 04:13:01 -0400 (EDT)
- References: <gs47lm$7p3$1@smc.vnet.net>
Hi,
I assume the function you want to plot is: f[r_]:= r^2 Exp[-r^2/2]. But
as this function only depends on r, the Contour surfaces will simply be
spheres. Therefore the only thing to plot is
Plot[f[r],{r,0,5}]
Daniel
chem_chick wrote:
> I needed help plotting the following function:
>
> f[x_,y_,z_] = (x^2+y^2+z^2) e^-(r^2/2)
>
> ContourPlot3D[(x^2 + y^2 - z^2) Exp[-r^2/2], {x, -10, 10}, {y, -10,
> 10}, {z, -10, 10}]
>
> does not work because it doesn't understand what r (radius) is....what
> is the keyword/whatever for radius? Or do I have to define r in terms
> of x,y,z somehow?! Help with syntax will be great!
>
> Thanks!
>