Parametric CurveParametrically defined curve in three/two dimensions is given by three/two univariate functions:x = f(u)
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Parametric surfaceParametrically defined surface in three dimensions is given by three bivariate functions:x = f(u,v)
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x = x0 + r cos q
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x = u
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x = x0 + (x1
- x0)t
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x = x0 + r . cos u . cos
v
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