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Unformatted text preview: APPM 4350/5350: Fourier Series and Boundary Value Problems Homework #3 Monday, September 20, 2010 Due: Friday, October 8, 2010 Note date due! 1. (a) Given the equation for y = y ( x ): x 2 d 2 y dx 2 + (2 b + 1) x dy dx + cy = 0 where b,c are real constants and b 2 &gt; c . (b) Transform the equation from independent variable x to z where x = e z . Hint: the equation should have constant coefficients. (c) Solve for the general solution y = y ( z ) in terms of real functions. (d) Transform the solution back to y = y ( x ) . (e) Show how to get the same solution y = y ( x ) by finding special solutions of the form: y s ( x ) = x p and then finding p . (f) Put the solution in real form if b 2 &lt; c ; find the solution if b 2 = c . 2. In this problem you will solve for the exterior ideal flow around a circle; this problem was discussed in class. However here you will use the velocity potential: u = where u is the velocity of the flow. The problem is posed as follows. Find the most general solution...
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This note was uploaded on 10/24/2010 for the course APPM 4350 taught by Professor Ablowitz during the Fall '08 term at Colorado.
- Fall '08