修改自:[url=https://www.geogebra.org/u/mgje]Martin Guggisberg[/url] 的 Sonnenblume gross,https://www.geogebra.org/m/bs4behhf
[br]黄色圆[br]l1=序列(圆周((r(i) posx(i),r(i) posy(i)),0.9 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[/img][br]kb=连分式(k,16)[br][img]data:image/png;base64,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[/img][br][br][br]posx(x)=r(x) cos(x w)[br]posy(x)=r(x) sin(x w)[br]r(x)=sqrt(t-x+1) a[br]k=((w)/(360°))
或可用[br][br]l5=序列(旋转(圆周((r f sqrt(i),0),((r)/(8)) ln(sqrt(i+1))+((r)/(4))),i w),i,1,N)[br][br]参:[url=https://www.geogebra.org/m/cq5yb2fu]Wachstum Sonnenblume2 – GeoGebra[/url]