(a) Show that the series $\frac{1}{\sqrt{3}\cdot 4} + \frac{1}{\sqrt{…

Previous year question for Engineering Mathematics-II.

Question

(a) Show that the series $\frac{1}{\sqrt{3}\cdot 4} + \frac{1}{\sqrt{4}\cdot 5} + \frac{1}{\sqrt{5}\cdot 6} + \dots$ is divergent.

(b) Test whether the given series converges conditionally or not $\frac{1}{2} - \frac{2}{5} + \frac{3}{10} - \frac{4}{17} + \dots$

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