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  1. GATE2019-15
  2. GATE2019-15
  3. GATE2019-15
  4. GATE2019-15

The partial differential equation

$\frac{\partial^{2}u}{\partial t^{2}}- C^{2}(\frac{\partial^{2}u}{\partial x^{2}}+\frac{\partial^{2}u}{\partial y^{2}})=0; where \quad c \neq 0$

  1. heat equation
  2. wave equation
  3. Poisson’s equation
  4. Laplace equation
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