What method do i use for this? sum of 1 to infinity (7^n) + n thanks
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$\displaystyle \sum\limits_{n = 1}^\infty {\left( {7^n + n} \right)} $ diverges.
You don't. It doesn't converge because $\displaystyle 7^n+ n$ does not go to 0 as n goes to infinity.
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