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## henpen Group Title Can you do the integral test on an increasing function when analysing an increasing series? 2 years ago 2 years ago

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1. henpen

Or, more generally, what restrictions are there as to *when* you can use the integral $\int\limits_?^{\infty} f(x)$ to see whether $\sum_{k=0}^{\infty}f(k)$ converges?