hw_2_10_09

# hw_2_10_09 - MA 221 Homework Solutions Due date Tuesday 4.4...

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MA 221 Homework Solutions Due date : Tuesday , February 10 , 2009 4 . 4pg . 186 # 5 , 1 ̄ 1 ̄ , 1 ̄ 2 ̄ , 1 ̄ 3 ̄ , 1 ̄ 5 ̄ , 16 , 2 ̄ 1 ̄ , 22 (Underlined Problems are to be handed in) In problems 5 determine whether the method or not the method of undetermined coefficients can be applied to find a particular soultion. 5) y ′′ 3 y y sec Since sec 1 cos , the method of undetermined coefficients is not applicable. In problems 11, 12, 13, 15, 16, 21 and 22 find a particular solution to the differential equation. 1 ̄ 1 ̄ .) 2 z ′′ z 9 e 2 t z p Ae 2 t z p 2 Ae 2 t z p ′′ 4 Ae 2 t 2 4 Ae 2 t Ae 2 t 9 e 2 t 9 Ae 2 t 9 e 2 t A 1 z p e 2 t Or p 2 2 1 p 2 9 0so z p 9 e 2 t 9 e 2 t 1 ̄ 2 ̄ .) 2 x x 3 t 2 x p At 2 Bt C x p 2 At B 2 2 At B At 2 Bt C 3 t 2 At 2 4 A B t 2 B C 3 t 2 A 3;4 A B

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hw_2_10_09 - MA 221 Homework Solutions Due date Tuesday 4.4...

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