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Math Help - How do i prove a series converges?

  1. #1
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    How do i prove a series converges?

    What method do i use for this?

    sum of 1 to infinity

    (7^n) + n

    thanks
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  2. #2
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    \sum\limits_{n = 1}^\infty  {\left( {7^n  + n} \right)} diverges.
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  3. #3
    MHF Contributor

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    You don't. It doesn't converge because 7^n+ n does not go to 0 as n goes to infinity.
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