i have the following series from 1 to infinity:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\sum(-1)^{n-1}*(\frac{4^n}{7^n})[/tex]

how can i evaluate the sum of this?

thanks

i know the answer is 4/11 but i do not know how to get this.

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# Convergence of series

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