Question: In Problems 28 through 30, find the first three nonzero terms in each of two linearly independent solutions of the form y = cnx

In Problems 28 through 30, find the first three nonzero terms in each of two linearly independent solutions of the form y = Σ cnxn. Substitute known Taylor series for the analytic functions and retain enough terms to compute the necessary coefficients.

(cos x) y'' + y = 0

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