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Combine contour and region plots: more intelligible. Note that asymptotes for the hyperbolas have same 60º/120º angles; some hyperbolas are singular; the fill created by Mathematica's RegionPlot has trouble dealing with singularities. Increasing MaxRecursion lessens the defects.
Explore another pencil of conics.
Each conic interpolates the four red points and is generated by one additional point to be interpolated. The boundary separating ellipses from hyperbolas is a pair of parabolas.
#漸近線 #Asymptomatic #双曲線 #hyperbola
#高校数学 #数学3 #大学受験 #理系
#創作同盟 #勉強垢 #オリキャラ
#drawing #イラスト王国 #絵描きの輪 #illustrations
#絵描きさんと繋がりたい #comic #絵描き人。
「漸近線、双曲線を図示しろ」って問題で正解をとる
コツ(?)を描いてます。