Find the locus of a point which moves such that the sum of its distances from points a(0,0,-alpha) and b(0,0,alpha) is a constant equal to 2a

Find the locus of a point which moves such that the sum of its distanc

1.	Find the locus of a point which moves such that the sum of its distances from points a(0,0,-alpha) and b(0,0,alpha) is a constant equal to 2a
Answer» Find the locus of a point which moves such that the sum of its distances from points a(0,0,-alpha) and b(0,0,alpha) is a constant equal to 2a