hw4[1] - y ( x ) for x > 0 and discuss its...

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MAE294B/SIO203B: Methods in Applied Mechanics Winter Quarter 2010 http://maecourses.ucsd.edu/mae294b Homework IV Due February 4, 2010. 1 The function y ( x ) satisfies the equation ˙ y + y x + ε - x ( x + ε ) 2 1 y = 0 , 0 < ε ± 1 . Find approximations to y ( 0 ) and to lim x y ( x ) for the two boundary conditions y ( 1 ) = 1 and y ( 1 ) = 2. 2 The function y ( x ) satisfies the equation ε y 00 + p 1 - x 2 y 0 - y 2 = 0 , y ( - 1 ) = 1 , y ( 1 ) = 1 , 0 < ε ± 1 . Find two terms in the inner and outer expansions of y . 3 The function y ( x ) satisfies the equation ε y 00 + x p y 0 - y = 0 , y ( 0 ) = 1 , lim x y ( x ) = 0 or 1 , 0 < ε ± 1 . Find a uniformly valid solution for
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Unformatted text preview: y ( x ) for x &gt; 0 and discuss its dependence on p (the boundary condition to use for large x depends on p ). 4 (Kevorkian &amp; Cole 4.3.5) Solve the boundary-value problem y 00 + y- y 2 = , y ( , ) = , y ( -1 , ) = 1 , &lt; 1 using (i) the method of multiple scales and (ii) boundary layer theory. Compare the two solutions. 1...
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This note was uploaded on 09/22/2010 for the course MAE MAE294B taught by Professor Mae294b during the Winter '09 term at UCSD.

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