Find the solution of the Clairaut equation











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How do you find the solution of the Clairaut equation
$$u = xu_{x} + yu_{y} + sqrt{1 + u^2_{x} + u^ 2_{y}}$$



with initial data



$$ x(0, s) = acos(s)$$$$ y(0, s) =acos(s) $$$$u(0, s) = 0,$$



where α is a constant
such that α > 1.










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  • It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
    – minimax
    Nov 17 at 22:03










  • Have you tried to differentiate it with wrt $x$ and then wrt $y$?
    – minimax
    Nov 17 at 22:07















up vote
0
down vote

favorite












How do you find the solution of the Clairaut equation
$$u = xu_{x} + yu_{y} + sqrt{1 + u^2_{x} + u^ 2_{y}}$$



with initial data



$$ x(0, s) = acos(s)$$$$ y(0, s) =acos(s) $$$$u(0, s) = 0,$$



where α is a constant
such that α > 1.










share|cite|improve this question
























  • It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
    – minimax
    Nov 17 at 22:03










  • Have you tried to differentiate it with wrt $x$ and then wrt $y$?
    – minimax
    Nov 17 at 22:07













up vote
0
down vote

favorite









up vote
0
down vote

favorite











How do you find the solution of the Clairaut equation
$$u = xu_{x} + yu_{y} + sqrt{1 + u^2_{x} + u^ 2_{y}}$$



with initial data



$$ x(0, s) = acos(s)$$$$ y(0, s) =acos(s) $$$$u(0, s) = 0,$$



where α is a constant
such that α > 1.










share|cite|improve this question















How do you find the solution of the Clairaut equation
$$u = xu_{x} + yu_{y} + sqrt{1 + u^2_{x} + u^ 2_{y}}$$



with initial data



$$ x(0, s) = acos(s)$$$$ y(0, s) =acos(s) $$$$u(0, s) = 0,$$



where α is a constant
such that α > 1.







pde wave-equation






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Nov 20 at 0:20

























asked Nov 17 at 21:29









Tim Jones

1019




1019












  • It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
    – minimax
    Nov 17 at 22:03










  • Have you tried to differentiate it with wrt $x$ and then wrt $y$?
    – minimax
    Nov 17 at 22:07


















  • It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
    – minimax
    Nov 17 at 22:03










  • Have you tried to differentiate it with wrt $x$ and then wrt $y$?
    – minimax
    Nov 17 at 22:07
















It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
– minimax
Nov 17 at 22:03




It seems the initial data is not consistent with your pde. What's the relation between $x$ and $y$ with $s$. Are we supposed to use the the method of characteristics?
– minimax
Nov 17 at 22:03












Have you tried to differentiate it with wrt $x$ and then wrt $y$?
– minimax
Nov 17 at 22:07




Have you tried to differentiate it with wrt $x$ and then wrt $y$?
– minimax
Nov 17 at 22:07















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