| Vibhor Gupta asks : The locus of a point P which moves such that 2 PA = PB, where A(0, 0) and B(4, –3) are points, is (A) 5x2 – 5y2 – 72x + 54y + 225 = 0 (B) 5x2 + 5y2 – 72x + 54y + 225 = 0 (C) 5x2 + 5y2 + 72x – 54y + 225 = 0 (D) 5x2 + 5y2 – 72x – 54y – 225 = 0 |
Prasanth asks : is equal to: (A) ![]() (B) ![]() (C) 2a (D) none of these |