The line `y=mx+c` is a normal to the ellipse `(x^2)/(a^2)+(y^2)/(b^2)=1,` if `c`

The line lx+my=n is a normal to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1, if

The condition that the line y=mx+c may be a secant to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 is

Find the condition that the line lx + my = n may be a normal to the ellipse x^(2)/(a^(2)) + y^(2)/b^(2) =1

If the line y=mx+c is a tangent to the ellipse x^(2)+2y^(2)=4 ,

A normal to the hyperbola (x^2)/4-(y^2)/1=1 has equal intercepts on the positive x- and y-axis. If this normal touches the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 , then a^2+b^2 is equal to 5 (b) 25 (c) 16 (d) none of these

Find the equation of the normal to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 at the positive end of the latus rectum.

If y=mx+c is a tangent to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 then the point of contact is

if the line y=2x+c be a tangent to the ellipse (x^(2))/(8)+(y^(2))/(4)=1, then c is equal to