Problem Statement: CE Board May 1996
What is the differential equation of the family of parabolas having their vertices at the origin and their foci on the x-axis?
- A. 2x dy – y dx = 0
- B. x dy + y dx = 0
- C. 2y dx – x dy = 0
- D. dy / dx – x = 0
Problem Answer:
The differential equation of the family of parabolas is 2xdy – ydx = 0
Solution:
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