Thanu Dharshani posted an Question
April 08, 2021 • 16:27 pm 30 points
  • IIT JAM
  • Mathematics (MA)

This is the differential equation of the given family of curves. dr to get the differential equation of the system of orthogonal trajectories, we replace d by-r

how it's been replaced by?? can you give reason.. for this with steps

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