The line `lx+my+n=0` touches `y^2=4ax` if

The line lx+my+n=0 touches y^(2)=4x and x^(2)=4y simultaneously then l+2m+3n=

If the line lx+my+n=0 touches the hyperbola (x^(2))/(a^(2))-(y^(2))/(b^(2))=1 . Then

If the line lx+my+n=0 touches the hyperbola (x^(2))/(a^(2))-(y^(2))/(b^(2))=1 . Then

If the line lx+my +n=0 touches the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 then

If the line lx+my+n=0 touches the hyperbola (x^(2))/(a^(2))-(y^(2))/(b^(2))=1 . Then

If the line lx+my +n=0 touches the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 then

If the line lx+my+n=0 touches the hyperbola (x^(2))/(a^(2))-(y^(2))/(b^(2))=1 . Then show a^2 l^2 - b^2 m^2 =n^2

If 4t^(2)-5m(2)+6l+1=0 , then the line lx+my+1=0 touches the circle

If the line lx+my+n=0 touches the parabola y^(2)=4ax, prove that ln=am^(2)