Aw Qirui Guo
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Next privilege 250 Rep.
 Nov 4 asked What is the $q$ for the formula $S_n=\frac{a_1(1-q^n)}{(1-q)}$ with given $a_1$,$S_n$ and $n$? Oct 12 awarded Popular Question May 24 accepted How to pick a comparison series to determine the convergence or divergence of a given series? Jan 18 comment Why have we chosen our number system to be decimal (base 10)? @Ｊ.Ｍ. Why do you think duodecimal is better? Very curious. Dec 24 awarded Scholar Dec 24 awarded Supporter Dec 24 comment Draw graph of $\frac{1}{f(x)}$ from graph of $f(x)$ Ben, thanks very much for such detailed answer and picture!! Dec 24 accepted Draw graph of $\frac{1}{f(x)}$ from graph of $f(x)$ Dec 23 asked Draw graph of $\frac{1}{f(x)}$ from graph of $f(x)$ Nov 4 comment How to pick a comparison series to determine the convergence or divergence of a given series? it seems that the 1/n can't work out here. Nov 4 awarded Student Nov 4 asked How to pick a comparison series to determine the convergence or divergence of a given series?