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lecture17 - Section 6.3 Annihilator Method, Review for Exam...

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Section 6.3 Annihilator Method, Review for Exam II March 31, 2009 Annihilator Method
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Today’s Session For the exam on Thursday, do not sit between/next to the two people you have been sitting during class hours. If you have a cap, you must either turn it or take it o±. A Summary of This Session: (1) Annihilator Method, by Example. (2) Review of some of the questions in the exam (3) The TA’s will cover whatever questions left, or questions that you have tomorrow. (4) Do not forget, we are available 4-8 pm tonight, Math East 145. I am available 4-6 pm. (5) For clicker requests and adjustments, please come to o²ce hours. I cannot handle them by email. Annihilator Method
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Q. Use the annihilator method to write the general form of the solution to the each of the following diFerential equations: (a) θ ′′ - θ = e x (b) θ ′′ - θ = xe x (c) θ ′′ - θ = x 2 e x Answer: (a) We can write the equation in the form ( D 2 - 1) θ = e x . We note that (
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lecture17 - Section 6.3 Annihilator Method, Review for Exam...

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