Question

what's S1 and S2 and S11 in the circle chapter class 11

Answer 1

$s = {x}^{2} + {y}^{2} + 2gx + 2fy + c$

$s1 = x \alpha + y \beta + g(x + \alpha ) + f(y + \beta ) + c$

$where \: (x1.y1) \: is \: apoint \: ( \alpha \: \: \beta )$

s2 is same

$s11 = { \alpha }^{2} + { \beta }^{2} + 2g \alpha + 2f \beta + c$