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Is there an easy way to plot a 3D surface e.g. z^2 = x^2 + y^2 -1 ? I tried RegionPlot3D but it seems it works only for surfaces described by inequalities.

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closed as off-topic by MarcoB, Jens, m_goldberg, ilian, Bob Hanlon Aug 6 '15 at 6:52

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – MarcoB, Jens, m_goldberg, ilian, Bob Hanlon
If this question can be reworded to fit the rules in the help center, please edit the question.

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Maybe ContourPlot3D is what you are searching for:

ContourPlot3D[ z^2 == x^2 + y^2 - 1, {x, -2, 2}, {y, -2, 2}, {z, -2, 2}]

enter image description here

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