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The following partial differential equation is defined for u:u (x, y) 

The set auxiliary conditions necessary to solve the equation uniquely, is 
  • a)
    three initial conditions
  • b)
    three boundary conditions
  • c)
    two initial conditions and one boundary condition
  • d)
    one initial conditions and two boundary conditions
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The following partial differential equation is defined for u:u (x, y)T...
Given:

This is a 1-D Heat equation. It measures temperature distribution in a uniform rod.
The general solution is u = f(x, t)

Auxiliary solutions include both initial and boundary conditions.
1) Number of initial conditions = Highest order of time derivative in partial differential = 1
2) The number of boundary conditions:
 To solve this partial differential equation, it needs to be integrated twice that will introduce two arbitrary constants.
Hence 2 boundary conditions and 1 initial condition are required to solve this Partial differential equation.
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