સમીકરણ $xy + y^2 = \tan x + y$ માટે $\frac{dy}{dx}$ શોધો.

  • A
    $\frac{\sec^2 x - y}{x + 2y - 1}$
  • B
    $\frac{\sec^2 x + y}{x + 2y - 1}$
  • C
    $\frac{\sec^2 x - y}{x + 2y + 1}$
  • D
    $\frac{\sec^2 x + y}{x + 2y + 1}$

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