20231019[br][br]研习自：https://www.bilibili.com/video/BV1Lt4y127Jy/?spm_id_from=333.880.my_history.page.click&vd_source=edcad05029f6d4b15eaba8a422397416

关键参数[br]A=((sin(5 α)+5) cos(α),(sin(5 α)+5) sin(α))[br]D=((sin(n α)+n) cos(a α),(sin(n α)+n) sin(a α))[br]loc2=轨迹(D,α)[br]d=曲线(((sin(n α)+n) cos(a α),(sin(n α)+n) sin(a α)),α,0,2 π)[br][br]轨迹loc2与曲线d图形相同[br][br]若+0，并扩大n倍，则曲线交于中心点[br]D=n ((sin(n α)+0 n) cos(a α),(sin(n α)+0 n) sin(a α))[br][br]变式[br]e=曲线((n (sin(a α)+0 n) cos(n α+n),n (sin(a α)+0 n) sin(n α+n)),α,0,2 π)