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Black Book Advanced Problems in MathematicsMathematicsDifferential Equations

Solution of the differential equation x dy - y dx - x^2 + y^2 dx = 0 is:

Options

  1. Ay - x^2 + y^2 = cx^2
  2. By + x^2 + y^2 = cx
  3. Cx - x^2 + y^2 = cx^2
  4. Dy + x^2 + y^2 = cx^2 .

Correct answer

D. y + x^2 + y^2 = cx^2 .

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