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向日葵序列

修改自:Martin Guggisberg 的 Sonnenblume gross,https://www.geogebra.org/m/bs4behhf
黄色圆 l1=序列(圆周((r(i) posx(i),r(i) posy(i)),0.9 sqrt(r(i)-1)),i,1,1900) kb=连分式(k,16) posx(x)=r(x) cos(x w) posy(x)=r(x) sin(x w) r(x)=sqrt(t-x+1) a k=((w)/(360°))
或可用 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) 参:Wachstum Sonnenblume2 – GeoGebra