x=a {cost}三次方,y=a {sint}的三次方,求曲线围成的面积

问题描述:

x=a {cost}三次方,y=a {sint}的三次方,求曲线围成的面积

答:

星形线面积参考:

http://wenku.baidu.com/link?url=ubrI1fKpJWAk2QaqabBLo65HTUQL6B7ggN_StNcLC1jpE83fPJpIeYXODpJydOOxM79SUciUlez4WGZvSSfDgDJAqafcyrioza0qHHbYJSq