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How Do I rotate f(x) around the xaxis in MATlab or Mathematica? 
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#1
Sep2104, 09:12 PM

P: 492

Please help, I want a visualization of the function y = sech(x) revolved around the xaxis from x = 2 to 2, creating a "solid of revolution".



#2
Sep2204, 12:11 AM

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HW Helper
P: 3,147

Don't they have a plot3D command?



#3
Sep2204, 01:18 AM

P: 492

Yes, but how would I use that in conjunction with the rotation? Could you give me an example please?



#4
Sep2204, 01:40 AM

Sci Advisor
HW Helper
P: 3,147

How Do I rotate f(x) around the xaxis 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.) 


#5
Sep2204, 06:56 PM

P: n/a

I believe the command is "SurfaceOfRevolution", do a search in the master index.



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