Point p is the only point on the x axis related to a? b？ A point with a distance of 2a?

What about the remaining point a? b？ The sum of distances is greater than 2a? (Outside the ellipse)

So p is such an extreme point.

Looking for p?

We can estimate it by algebraic inequality.

You can also use geometric symmetry as shown in the figure to find p? Coordinates of