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Re: Draw a 3D surface


g[y_] := y^2 - 2

Plot3D[Exp[-x^2 - y^2], {x, -3, 3}, {y, -3, 3}, PlotRange -> All,
  RegionFunction -> Function[{x, y, z}, x < g[y]]]



jl_03824 at wrote:
> I intend to draw a 3D surface, which is defined in a tricky way. Given
> function f(x, y), the values of f are known but the range is
> determined by a function of y, g(y). I need to plot x as a function of
> y and f within the range determined by g(y). Can anybody help?
> Appreciate!
> Jun Lin

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