Answer: In 37 and 38 verify that the indicated pair of
Chapter 1, Problem 1.1.38(choose chapter or problem)
In 37 and 38 verify that the indicated pair of functions is a solution of the given system of differential equations on the interval (, ). d2xdt 2 4y et d2ydt 2 4x et;x cos 2t sin 2t 15 et xy cos 2t sin 2t 15 et y
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