Given M(3,0)which is inside the circle
a)find the equation of the chord AB that is bisected at the pt M
b)write down the equation of the family of circles passing A and B
c)hence, find the equation of the circle passing through A , B and origin.
更新1:
但係b 果到是否只係write down x square +ksquare+......K(x +y-3)=0 就可~??
