search
Q: The equation a(x² + y² + z²)+2(ux+vy+wz) +d=0 where a 0, always represents a sphere, provided?
  • A. u² + v² + w² – ad > 0
  • B. u² + v² + w² + ad > 0
  • C. u² + v² + w² – ad < 0
  • D. u² + v²+ w² + ad < 0
Correct Answer: Option A -
answer image

Explanations:

explanation image