Re: visualizing a maximum in the intersection between two surfaces
- To: mathgroup at smc.vnet.net
- Subject: [mg131080] Re: visualizing a maximum in the intersection between two surfaces
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Mon, 10 Jun 2013 04:10:43 -0400 (EDT)
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- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-outx@smc.vnet.net
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- References: <20130608063415.570076A22@smc.vnet.net>
An alternate method
Show[
ContourPlot3D[Tooltip[x + y == 1],
{x, 0, 1}, {y, 0, 1}, {z, 0, 1/2},
ContourStyle -> Opacity[.7],
MeshStyle -> Gray],
Plot3D[Tooltip[x*y], {x, 0, 1}, {y, 0, 1},
PlotStyle -> Opacity[.7],
Exclusions -> {x == 1/2, y == 1/2, x + y == 1},
ExclusionsStyle ->
Directive[Opacity[1], Black, Thick],
MeshStyle -> Gray,
PlotPoints -> 100]]
Bob Hanlon
On Sat, Jun 8, 2013 at 2:34 AM, <dusko.cakara at gmail.com> wrote:
> Hello,
> can somebody please help:
> I want to visualize that for x+y=1, maximum x*y occurs when y=0.5 and
> x=0.5.
>
> Graphically, this can be visualized as the maximum of the projection curve
> of the x+y=1 line in the x-y plane, at the x*y surface. Equivalently, we
> can look for the maximum in the intersection curve between the surface x*y
> and the surface peripendicular to the x-y plane with the base x+y=1.
>
> Can I plot this in a simple manner?
>
> Thanks in advance!
> Dusko
>
>
- References:
- visualizing a maximum in the intersection between two surfaces
- From: dusko.cakara@gmail.com
- visualizing a maximum in the intersection between two surfaces