Lim n^2 + n + 5 / 2{n^2} + 1 bằng
Giải thích
Chọn B
\[\lim \frac{{{n^2} + n + 5}}{{2{n^2} + 1}} = \lim \frac{{1 + \frac{1}{n} + \frac{5}{{{n^2}}}}}{{2 + \frac{1}{{{n^2}}}}} = \frac{1}{2}.\]
Chọn B
\[\lim \frac{{{n^2} + n + 5}}{{2{n^2} + 1}} = \lim \frac{{1 + \frac{1}{n} + \frac{5}{{{n^2}}}}}{{2 + \frac{1}{{{n^2}}}}} = \frac{1}{2}.\]