Question

If p represents z = x + iy in the argand plane | z – 1|²+ | z + 1|² = 4 then locus of P is –

• A. x² + y² = 2
• B. x² + y² = 1
• C. x² + y² = 4
• D. x + y = 2

Answer 1

Answer: (B)

x² + y² = 1

Answer 2

Sol. (x – 1)² + y² + (x + 1)²+y²= 42(x² + 1) + 2y² = 4

\ x² + y² = 1