1/ lim($\frac{1}{n^{2}+1}+\frac{2}{n^{2}+2}+...+\frac{n}{n^{2}+n}$)
2/ lim ($\frac{1}{\sqrt{n^{2}+1}}+\frac{1}{\sqrt{n^{2}+2}}+...+\frac{1}{\sqrt{n^{2}+n}}$)
24-11-2018 - 10:23
1/ lim($\frac{1}{n^{2}+1}+\frac{2}{n^{2}+2}+...+\frac{n}{n^{2}+n}$)
2/ lim ($\frac{1}{\sqrt{n^{2}+1}}+\frac{1}{\sqrt{n^{2}+2}}+...+\frac{1}{\sqrt{n^{2}+n}}$)
08-11-2018 - 22:24
09-09-2018 - 21:23
16-05-2018 - 16:36
16-05-2018 - 16:21
Cho tam giác ABC. Tìm max
P=$2\sqrt{3}sin\frac{A}{2}+\sqrt{15}sin\frac{B}{2}+2\sqrt{5}sin\frac{C}{2}$
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