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The type of partial differential equation $\dfrac{\partial ^2 P}{\partial x^2} + \dfrac{\partial ^2 P}{\partial y^2}+3 \dfrac{\partial ^2 P}{\partial x \partial y}+ 2 \dfrac{\partial P}{\partial x} – \dfrac{\partial P}{\partial y} = 0$ is

  1. elliptic
  2. parabolic
  3. hyperbolic
  4. none of these
in Partial Differential Equation (PDE) recategorized by
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