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Tag Graphics [in x_,y_] is protected

Posted 9 years ago

Hello,

im trying to make som graphics with my Mathematica: f[x, y] := (1 - x^2 - y^2)/(1 + x^2 + y^2) a := -4 b := 4 c := -5 d := 5

F = Plot3D[ f[x, y], {x, a, b}, {y, c, d}, PlotLabel -> "3D.Diagramm", AspectRatio -> 1/GoldenRatio, AxesLabel -> {"x", "y", "z"}, PlotRange -> {{a, b}, {c, d}, {-1, 1}} ]

Diagramm = ContourPlot[ f[x, y], {x, a, b}, {y, c, d}, PlotLabel -> "Höhendiagramm", ColorFunction -> "BlueGreenYellow", AspectRatio -> 1/GoldenRatio

] And as an answer i get: "Tag Graphics [in x,y] is protected"

Can anyone help me? Thanks

POSTED BY: Sandra Albrecht
POSTED BY: Udo Krause
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