Subsequences that converge to different values

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Homework Statement



Is it possible to have a sequence that contains subsequences converge to every point in the infinite set {1, 1/2, 1/3,...}? If possible, then give an example; if not, give an argument.


Homework Equations





The Attempt at a Solution



I don't think it's possible. But I don't know how to argue that.
Any help is appreciated!
 
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There is already a thread on the same issue on the first page in this section.

https://www.physicsforums.com/showthread.php?t=432295
 

Thread 'Prove that the integral is equal to ##\pi^2/8##'

Prove $$\int\limits_0^{\sqrt2/4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx = \frac{\pi^2}{8}.$$ Let $$I = \int\limits_0^{\sqrt 2 / 4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx. \tag{1}$$ The representation integral of ##\arcsin## is $$\arcsin u = \int\limits_{0}^{1} \frac{\mathrm dt}{\sqrt{1-t^2}}, \qquad 0 \leqslant u \leqslant 1.$$ Plugging identity above into ##(1)## with ##u...
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