1.

If S-= x^(2) + y^(2) + 2gx + 2fy + c= 0repre- sents a circle then show that the straight line lx + my + n = 0 (iii) will not meet the circle if g^(2)+f^(2)-c lt ((gl+mf-n)^(2))/((l^(2)+m^(2)))

Answer»


ANSWER :`(g^(2) + F^(2) -C )= ((gl+mf-n)^(2))/(L^(2)+m^(2))`


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