1.

Two lines are drawn at right angles one being a tangent to y^(2) = 12x and the other to x^(2) = 111116y. If the locus of their point of intersection is (x^(2)+y^(2))(lx+my)+(nx-3y)^(2)=0 then l+n-m is equal to

Answer»


Solution :Tangets on both the parabolas
`y = mx +(3)/(m),y = mx-4m^(2)`
`m^(2)x- my +3=0,4m^(2)-mx+y=0` eliminating m we GET the LOCUS


Discussion

No Comment Found

Related InterviewSolutions