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formula2.doc
I’m trying to prove the following:
Not long ago, I had asked a similar question, but the indices were
different.
Series : Absolute Convergence - Suppose the summation from k=1 to n of a_k is absolutely convergent and {b_n} is bounded. Prove that this implies the summation from k=1 to n of a_k*b_k is absolutely convergent.