Difference between revisions of "Surface Command"
From GeoGebra Manual
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::creates the related surface in Graphics View 3D. | ::creates the related surface in Graphics View 3D. | ||
:*Let, ''r'' and ''R'', two positive real, | :*Let, ''r'' and ''R'', two positive real, | ||
| − | ::<code><nowiki>Surface[(R + r cos( u)) cos(v) , (R + r cos( u)) sin(v) , r sin(u ),u,0,2 π , v,0, 2 π]</nowiki></code> | + | ::<code><nowiki>Surface[(R + r cos( u)) cos(v) , (R + r cos( u)) sin(v) , r sin(u ), u, 0, 2 π , v, 0, 2 π]</nowiki></code> |
::creates the torus generated by a circle of radius ''r'' which rotates about zAxis at a distance ''R''.</div>}} | ::creates the torus generated by a circle of radius ''r'' which rotates about zAxis at a distance ''R''.</div>}} | ||
Revision as of 19:43, 9 June 2013
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This page is about a feature that is supported only in GeoGebra 5.0. |
- Surface[ <Expression a>, <Expression b>, <Expression c>, <Parameter Variable 1>, <Start Value>, <End Value>, <Parameter Variable 2>, <Start Value>, <End Value> ]
- Yields the Cartesian parametric 3D surface for the given x-expression a, y-expression b and z -expression c, using two parameter variables within the given intervals [Start Value, End Value].
- Example:
Surface[2 sin(t) * sin(v), sin(v), cos(v), t, 0, 2π, v, -π, π]
- creates the related surface in Graphics View 3D.
- Let, r and R, two positive real,
Surface[(R + r cos( u)) cos(v) , (R + r cos( u)) sin(v) , r sin(u ), u, 0, 2 π , v, 0, 2 π]- creates the torus generated by a circle of radius r which rotates about zAxis at a distance R.
- Note:
- End Value must be greater than or equal to Start Value and both must be finite.
- x, y and z are not allowed as parameter variables.
