Question

If A and B are two points in a plane, so that PA-PB is
constant, then the locus of P is
(a) hyperbola
(b) circle
(c) parabola
(d) ellipse
​

Answer 1

Answer:

hyperbola

Step-by-step explanation:

dont know sorry

Answer 2

Answer:

ellipse

Step-by-step explanation:

eqn of ellipse is

x^2/a +y^2/b=1