Suppose that at, al, a3, . .. , all are positive numbers
Chapter 10, Problem 10.91(choose chapter or problem)
Suppose that at, al, a3, . .. , all are positive numbers satisfying the following conditions: i) Dl ~ a2 ~ a3 ~ ; ii) the series a2 + "4 + as + al6 + ... diverges. Show that the series diverges.
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