Is it me or is it Wolfram Alpha ?

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Is it me or is it Wolfram Alpha ?

Postby pere1954 » Sat Jun 02, 2012 10:28 am

While preparing a task for my students I noticed Alpha gives "Sum does not converge" for an alternating series which obviously converge conditionally by Leibnitz theorem. Here's what Alpha wrote:

sum_(n=1)^infinity ((-1)^n log(n))/n (sum does not converge)

Am I doing something wrong?

Alpha does interpret correctly my input, but gives the wrong answer.
I would appreciate yr help before sending my students to use Alpha for this task. Tnks. Dvora
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