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Eliminate the arbitrary
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- If y = sinx + cosx, then y" is - sinx + cosX sinx - cosx COSX O sinx - coSX O sinx + coSxA particular solution of y" + y = sinx + xcosx -(x²sinx – 2xcosx) 4 a. b. (x?sinx – xcosx) 4 (x?sinx + xcosx) C. (x?sinx - 2xcosx) d. 글 2x3sinx-xcosx) е.Integrate f(cos x)e*+sinxdx A. -et+sinx +C B. e-sin x + C c. et+sinx + C D. e+sinx + C A C