How to graph 2D function in a 3D plot?

Questions
1

Hi, I wanto to graph, Plot[Sqrt[4-x^2], {x, 0, 2}], but I want to see that graph in 3D?

How can I do that?

I want to create something like this graph.

plot.png
plot.png369Ɨ268 30.9 KB

I wanto to graph, Plot[Sqrt[4-x^2], {x, 0, 2}], but I want to see that graph in 3D?

How can I do that?

2

Victor, does this come close to what you want?

Plot3D[Sqrt[4 - x^2 - y^2], {x, 0, 2}, {y, 0, 2}, BoxRatios -> Automatic, ImageSize -> 500, Filling -> Bottom, FillingStyle -> Directive[Opacity[.3], Blue]]

6984ppp.png
6984ppp.png500Ɨ516 37.3 KB

3

An alternative, combining two plots with Show:

Show[
 	ParametricPlot3D[
  		{0, u, v}, {u, 0, 1}, {v, 0, 2 u},
  		Mesh -> None, PlotStyle -> Green
  	],
 	ParametricPlot3D[
  		v {Cos[u], Sin[u], 0}, {u, 0, \[Pi]/2}, {v, 0, 1},
  		Mesh -> None, PlotStyle -> Green
  	],
 	Boxed -> False, AxesOrigin -> {0, 0, 0},
 	ViewPoint -> 7 {0.2, 0.2, 0.1}
 ]

5894Picture.png
5894Picture.png254Ɨ352 3.48 KB

4

Thanks you, so much! My paper will be more easy to understand with this plot.