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wolfram alphaのグラフ書式メモ

Last updated at Posted at 2025-05-18

はじめに

wolfram alphaに数式をいれるとグラフを生成してくれますが、もっと明示的に指示したいときの方法です。

x^2+y^2=1 x^2+y^2+z^2=1
image.png image.png

媒介変数によるグラフ

plot x = sin(6t), y = sin(5t)

または

plot x = sin(6t), y = sin(5t) for t from 0 to 2pi

または

parametric plot sin(6t), sin(5t) for t from 0 to 2pi
1 2
image.png image.png

3次元グラフ

ContourPlot3D[x^4+y^4+z^4-2(x^2y^2+y^2z^2+z^2x^2)==0,{x,-3,3},{y,-3,3},{z,-3,3}]

image.png

ContourPlot3D[x^4+y^4+z^4-2(x^2y^2+y^2z^2+z^2x^2)==1,{x,-3,3},{y,-3,3},{z,-3,3}]

image.png

※URL指定でwolfram alphaに直接飛ばせるが、プラス記号は%2Bに置き換える必要があった。

ContourPlot3D[x^4y^4z^4-2(x^2y^2+y^2z^2+z^2x^2)==1,{x,-3,3},{y,-3,3},{z,-3,3}]

image.png

おまけ

Macに付属のGrapherでの描画です

image.png image.png
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