s251ex1(su09) - ) = t 4 0 7. y = C 1 t + C 2 t-2 8. ) sin(...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
MATH 251 Exam I July 16, 2009 ANSWER KEY 1. (a) E (b) H (c) D (d) A 2. 1 2 - = t e y 3. (a) Q 50 Q + = 8, Q (0) = 100 (b) Q ( t ) = 400 - 300 e - t / 50 (c) 400 ) ( lim = t Q t 4. (a) (0, ) (b) t t y 2 1 64 1 3 - = 5. (a) y = 3 e t - e 4 t (b) - = ) ( lim t y t 6. W ( y 1 , y 2 )( t
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ) = t 4 0 7. y = C 1 t + C 2 t-2 8. ) sin( ) cos( ) ( ) 2 sin( ) 2 cos( 2 2 1 t F t E e Dt Ct t B t A e C e C y t t t + + + + + + + =-9. (a) iii (b) y = e t + t e t...
View Full Document

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.

Ask a homework question - tutors are online