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Unformatted text preview: , y (0) = 7 (a) What is the longest interval in which you are sure that a solution exists? (b) Could the power series solution centered at x = 0 be used to get a good approximation for y (1 . 5)? Why or why not? 5. (15 points) Find the general solution of ( x7) 2 y 005( x7) y + 13 y = 0 on x < 7. 6. (15 points) Find the general solution of x 2 y 003 xy + 4 y = 2 x 2 ln x on x > 0. 7. (15 points) Find the recurrence relation and the rst four nonzero terms of the power series solution centered at x = 0 for the initial value problem (1x ) y 00 + 2 xy + 3 y = 0 , y (0) = 6 , y (0) = 1 ....
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 Spring '08
 Fonken

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