Solution: Solve (cos x cos y – cotx) dx – sin x sin y dy = 0

Solve (cos x cos y – cotx) dx – sin x sin y dy = 0. How to solve differential equations?

Solve (cos x cos y – cotx) dx – sin x sin y dy = 0

Problem Statement: ECE Board April 1995

Solve (cos x cos y – cotx) dx – sin x sin y dy = 0

  • A. sin x cos y = ln (c cos x)
  • B. sin x cos y = ln (c sin x)
  • C. sin x cos y = -ln (c sin x)
  • D. sin x cos y = -ln (c cos x)

Problem Answer:

The solution is sin x cos y = ln (c sin x)

Solution:

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