How can I prove that series function is continuous with epsilon-delta definition.
$f(x)=\sum_{n=1}^{\infty} \frac{ {\displaystyle \lfloor nx\rfloor } }{n^{2}}$
a) Prove that it is discontinuous in rationals numbers.
How can I prove that series function is continuous with epsilon-delta definition.
$f(x)=\sum_{n=1}^{\infty} \frac{ {\displaystyle \lfloor nx\rfloor } }{n^{2}}$
a) Prove that it is discontinuous in rationals numbers.
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