Question: To get a feel for higher order ODEs, show that the given functions are solutions and form a basis on any interval. Use Wronskians. In

To get a feel for higher order ODEs, show that the given functions are solutions and form a basis on any interval. Use Wronskians. In Prob. 6, x > 0,

cos x, sin x, x cos x, x sin x, yiv + 2y" + y = 0

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