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Question #24833

Use D'Alembert's formula to solve the following Cauchy Problem:
u_tt - 9u_xx = 0 on -infinity < x < infinity, t > 0.
u(x,0) = 0.
u_t(x,0) = 2xe^(-x^2)

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**1.**Consider the pde u_t + (4u^3 + 4u)u_x = 0. a) Express the pde in conservation form: &…**2.**using chain rule find dx/dy of y= u/5+7 and u=5x-35?**3.**Hi! I have got 35 coordinates (x;y) which seem to form a function of the second degree.…**4.**y’ + y = 2 cos x y (0) = 1 1) Find an approximate solution for y (&p…**5.**differential of y=(1+cos^2(3x))^2 I got (1+cos^2(3x))(cos3x)(-sin3x) but my answer key…**6.**evalaet the expression or x=6 x2-15 -x-9**7.**Solve the Cauchy problem equation: u_x + u_y = u^2, u(x,0) = 1.

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Hi, everything went well. I received my assignment before the due date but I got a score of 85% because it didn't pass all the test cases. I just wish the expert spend a little more time debugging and checking for the correct output.

#226068 on Mar 2019

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