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    Test the series for convergence

    hello I have this one: \sum_{n=1}^{\infty} \left( 1 - \sqrt[n]{n} \right) mmmmm am sure it will be tested by using one of the comparison tests but am not getting it any help? this is not my homework, actually I finished my college 2 years ago.
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    Inverse function

    Inverse function (Edited) Homework Statement Find the inverse function of : f(x)=e^x-e^{-x}+2 where x \geq 0 Homework Equations All what I did is : y=e^x-e^{-x}+e The Attempt at a Solution How in earth can I solve this for x ?
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