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Exact Solutions > Nonlinear Partial Differential Equations > Higher-Order Partial Differential Equations

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6. Fourth-Order Partial Differential Equations

  1. wtt + (wwx)x + wxxxx = 0.    Boussinesq equation.
  2. wyw)xwxw)y = a ΔΔw.    Equation of motion of viscous fluid; it is obtained from the Navier--Stokes equations.

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