Show that x f (x) dx = xF (x) G(x) where F (x) = f (x) and G (x) = F (x). Use this to
Chapter 5, Problem 104(choose chapter or problem)
Show that x f (x) dx = xF (x) G(x) where F (x) = f (x) and G (x) = F (x). Use this to evaluate x cos x dx.
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