Find the equation for the ellipse that satisfies the given conditions,
The foci (±3,0) lie on x - axis.
So the equation of ellipse in standard form is,
Now foci(±c,0)is (±3,0)⇒c=3We know that c2=a2−b2∴(3)2=(4)2−b2⇒b2=16−9=7
Thus equation of required ellipse is,