题目内容
x2+4y2-2x=0 由=0,得(x-1)2-(1-4y2)=0,
整理得(x-1)2+4y2=1,即x2+4y2-2x=0.
A.3-i B.1+3i C.3+i D.1-3i
A.(x-1)2+4y2=1 B.(x-1)2-4y2=1
C.(x-1)2+y2=1 D.(x-1)2-y2=1