ESE 2021Q80
Q: The surface which intersects the surfaces of the system z(x + y) = c(3 z + 1) orthogonally and which passes through the circle x² + y² = 1, z = 1, is given by
(a)x² + y² = 2 z³ + z² − 2
(b)x² − y² = z³ + z + 1
(c)x² − y² = z² + 4
(d)x² + y² = z³ + z² + 4
Correct Answer: (b)
Detailed explanation coming soon.