hw_2_5_6_09

hw_2_5_6_09 - MA 221 Homework Solutions Due Thursday Friday...

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MA 221 Homework Solutions Due Thursday / Friday , February 5 / 6 , 2009 4.2 p. 167-169 # 1 ̄ 9 ̄ ,4 ̄ 7 ̄ 4.3 p. 177 #2 ̄ 6 ̄ 4.4 p. 186 # 1 ̄ 9 ̄ (Underlined problems are to be handed in) Section 4.2 For problem 19, solve the given initial value problem. 1 ̄ 9 ̄ .) y ′′ 4 y 5 y 0, y 1 3, y 1 9 Solution: r 2 4 r 5 r 5  r 1 0 r 5, 1 y t c 1 e 5 t c 2 e t y 1 3 c 1 e 5 c 2 e y 1 9 ec 1 e 5 c 2 e Solving the system c 1 2 e 5 c 2 e 1 y t 2 e 5 t 1 e t 1 For problem 47, solve the initial value problem. 4 ̄ 7 ̄ .) y ′′′ y 0, y 0 2, y 0 3, y ′′ 0 1 r 3 r 0 r 1, 1,0 y t c 1 e 0 t c 2 e t c 3 e t c 1 c 2 e t c 3 e t y t c
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This note was uploaded on 09/22/2009 for the course MA MA221 taught by Professor Levine during the Spring '09 term at Stevens.

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hw_2_5_6_09 - MA 221 Homework Solutions Due Thursday Friday...

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