If you have four points $A(4,10),\; B(-4,10),\; C(-4,-10),\; D(4,-10)$ and an ellipse passes $A,B,C$ and $D$ points and these points form a rectangle inside this ellipse.
How to find the equation of that ellipse?
If you have four points $A(4,10),\; B(-4,10),\; C(-4,-10),\; D(4,-10)$ and an ellipse passes $A,B,C$ and $D$ points and these points form a rectangle inside this ellipse.
How to find the equation of that ellipse?
This should be in the comments but it has a graphic. What does the graphic convey?