y" + 2y' + 2y = 5x² − 5 cos(2x); y(0) = 12, y'(0) = −2

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Q: 7. Prove that every integer is congruent modulo 9 to a unique integer T such that -4≤r ≤ 4.

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Q: 17. Consider the initial value problem y' = y¹/3, y(0) = 0 from Example 3 in the text. a. Is there a…

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