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How Do I rotate f(x) around the x-axis in MATlab or Mathematica?

by VinnyCee
Tags: mathematica, matlab, rotate, xaxis
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VinnyCee
#1
Sep21-04, 09:12 PM
P: 492
Please help, I want a visualization of the function y = sech(x) revolved around the x-axis from x = -2 to 2, creating a "solid of revolution".
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Tide
#2
Sep22-04, 12:11 AM
Sci Advisor
HW Helper
P: 3,144
Don't they have a plot3D command?
VinnyCee
#3
Sep22-04, 01:18 AM
P: 492
Yes, but how would I use that in conjunction with the rotation? Could you give me an example please?

Tide
#4
Sep22-04, 01:40 AM
Sci Advisor
HW Helper
P: 3,144
How Do I rotate f(x) around the x-axis in MATlab or Mathematica?

I can't say for sure because I don't use either of the programs you mentioned but I would try something like
[tex]y^2 + z^2 = \frac {1}{\sinh^2 x}[/tex]
and solving for z in terms of x and y (two solutions) so that plot3D(z, [x, y]) for the two solutions would be plotted. (Again, I don't know the specifics of the syntax so you'll need to adjust but it should be something like that.)
Gonzolo
#5
Sep22-04, 06:56 PM
P: n/a
I believe the command is "SurfaceOfRevolution", do a search in the master index.


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