In 10 through 12, let 1, 2, ... , n, ... be the normalized
Chapter 11, Problem 12(choose chapter or problem)
In 10 through 12, let 1, 2, ... , n, ... be the normalized eigenfunctions of the SturmLiouville problem (11), (12).Show that the series1(x) + 2(x)2++ n(x)n +is not the eigenfunction series for any square integrable function.Hint: Use Bessels inequality, 9(b).
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