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Mathematics Wolfram|Alpha Algebra Geometry

Plot multiple planes at once in Wolfram|Alpha

Posted 12 years ago

Today I tried to plot a plane by using its coordinate form: plot 3x+3y-2z=18 that worked pretty good and gave me the following result: http://www.wolframalpha.com/share/clip?f=d41d8cd98f00b204e9800998ecf8427enonbipn9a6 However I want to include another two planes into that surface plot by using: plot 3x+3y-2z=18, 1x+3y-2z=5, 0x-6y+4z=3 I only got an error. What is wrong with my syntax? Jan

POSTED BY: Jan Cieslik

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Posted 12 years ago

In Mathematica, you would use the ContourPlot3D function for this http://reference.wolfram.com/mathematica/ref/ContourPlot3D.html It may not be possible to create a 3D plot with multiple contours yet in Wolfram\|Alpha, but I haven't been able to do it yet. Wolfram\|Alpha doesn't have a defined syntax, so there isn't anything generally wrong with your input.

POSTED BY: Sean Clarke

Posted 12 years ago

Thanks for your quick reply Sean. It's a real pitty that Wolfram\|Alpha does not support plotting multiple planes. So the only option left is to buy mathematica? ;) With regards, Jan

POSTED BY: Jan Cieslik

Arthur Hill, UCSF

Posted 8 years ago

Jan gave very good advice. For multiple planes in one graph, Show[graphics,options] would also be needed. E.g.: Show[ContourPlot3D[x == 2, {x, -5, 5}, {y, -5, 5}, {z, -5, 5}], ContourPlot3D[y == 3, {x, -5, 5}, {y, -5, 5}, {z, -5, 5}], ContourPlot3D[z == 4, {x, -5, 5}, {y, -5, 5}, {z, -5, 5}]]

POSTED BY: Arthur Hill

Posted 3 years ago

You can plot two planes (but no more than two) in Wolfram\|Alpha, by doing something like this: plot (3x+3y-2z-18)(x+3y-2z-5)=0 Also try: plot (x+y+z-10)(x+y/10+z-5)=0

POSTED BY: Yoonsuck Choe

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