Math 244F7

Math 244F7, Summer 2021 Quiz 5 Name: No calculators may be used on this quiz. You may not communicate with any other individual, directly or indirectly. (You may ask me a question, if necessary.) You may consult your own notes, but no other resource. All necessary steps towards a solution must be shown — if an answer comes out of nowhere, it matters very little whether it is correct. On your paper, please write and sign the following honor pledge: “On my honor, I have neither received nor given any unauthorized assistance on this assignment.” 1. (10 pts) Use method of undetermined coefficients to find a particular solution to y 2 ´ 4y 1 ` 3y “ et . 2. (6 pts) Weird Al Yankovic’s accordion weighs 16 pounds. At night, he hangs it in his closet on a spring, which causes the spring to stretch by two feet. Write down – but do not solve – a differential equation governing the displacement of the accordion from equilibrium as a function of time.
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