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Unformatted text preview: t = 0. (i) Find the characteristic exponents r 1 and r 2 (taking r 1 to be the larger one). (ii) Find a solution of the form y = a k t k + r with r = r 1 . (iii) Find another such solution with r = r 2 if possible or show that no such solution exists. (a) ty 00 + y = 0 (b) t 2 y 00 + ty( t + 2) y = 0 (c) ( tt 2 ) y 00 + (36 t ) y6 y = 0 (d) ty 00 + (1t ) y + y = 0, ( = constant). Notes: (1) The equation in part (c) is a special case of the hypergeometric equation. (2) The equation of part (d) is called the Laguerre equation . You should nd that when is a nonnegative integer, the soltuion you get is a polynomial of degree . These polynomials are called Laguerre polynomials . 1...
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This note was uploaded on 10/12/2009 for the course MATH 134 taught by Professor Staff during the Fall '08 term at University of Washington.
 Fall '08
 Staff
 Math

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