I picked up Mathematica 6.0 a couple days ago, so bear with me please.(adsbygoogle = window.adsbygoogle || []).push({});

1) Plot3D[{x^2 + y^2}, {x, -10, 10}, {y, -10, 10}]

returns a blank graph whereas when I set the boundaries from 0 to 2 it returns the actual graph! Why isn't it working?

2) When typing equationfinto the Plot3D function( e.g {x^2 + y^2} ), is it implied that x^2 + y^2 == z ? I would think so, but using == doesn't work in the Plot3D expression.

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# Mathematica newby needs help with plot

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