s251ex1(sp11) - 6 ) tan( 2 2 4 3 =-+ + y x xy y x 12. (a) t...

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MATH 251 Exam I February 17, 2011 ANSWER KEY (Form A) 1. (a) third order, nonlinear (b) first order, linear (c) second order, nonlinear 2. t e t e ) 1 ( - = μ 3. D 4. A 5. D 6. C 7. D 8. B 9. B 10. C 11. (a) 2 1 = α (b)
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Unformatted text preview: 6 ) tan( 2 2 4 3 =-+ + y x xy y x 12. (a) t t e e y 4 3 5-= (b) -= y t lim 13. y = C 1 t + C 2 t 4 14. 5 8 2 sin cos 2 2 2 2 1--+ + = t e t e C t e C y t t t...
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This note was uploaded on 07/16/2011 for the course MATH 251 taught by Professor Chezhongyuan during the Spring '08 term at Pennsylvania State University, University Park.

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