If P is any point on ellipse `x^2/4+4y^2=1` whose foci are at A and B, then the maximum value of `(PA)(PB)` equals

If P is a point on the ellipse (X^(2))/(9) + (y^(2))/(4) =1 whose foci are S and S' then the value of PS + PS' is

If P is a point on the ellipse (x^(2))/16+(y^(2))/25=1 whose foci are S and S', then PS+PS'=8.

If P is a point on the ellipse (x^(2))/(16)+y'(20)=1, whose foci are S and S' Then PS+PS' is equal to

If P is any point on the ellipse 9x^(2) + 36y^(2) = 324 whose foci are S and S'. Then, SP + S' P equals

If P is any point on the ellipse (x^(2))/(25) + (y^(2))/(9) = 1 whose foci are S and S' perimeter of Delta SPS' is

If P is any point on the ellipse x^(2)/36 +y^(2)/16=1 and S and S', are the foci, then PS+PS'equal to

P is any point on the ellipise (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and S and S are its foci, then maximum value of the angle SPS is