題組內容
6.
(a)
dA = __(15)__ , where D is the region in the first quedrant that lies betwoen the circles x2 + y2 = 4and (x-1)2+y2=1.
(a)
dA = __(15)__ , where D is the region in the first quedrant that lies betwoen the circles x2 + y2 = 4and (x-1)2+y2=1.