C:(x-1)^2+y^2=4,r=2
C(1,0)
AB:4x+3y+a=0
h=r
|3+3*0+a|/5=2
a=7,-13
7≥a≥-13
k(AB)=-4/3
k=-1/k(AB)=3/4
y=k*(x-1)=(3/4)*(x-1)
弦AB的中垂线方程:3x-4y-3=0
C:(x-1)^2+y^2=4,r=2
C(1,0)
AB:4x+3y+a=0
h=r
|3+3*0+a|/5=2
a=7,-13
7≥a≥-13
k(AB)=-4/3
k=-1/k(AB)=3/4
y=k*(x-1)=(3/4)*(x-1)
弦AB的中垂线方程:3x-4y-3=0