Question

tìm

\(lim\left(2n-1\right)\sqrt{\dfrac{2n+3}{n^4-n^2+2}}\)

Answer 1

Lời giải:

\(\lim\limits(2n-1)\sqrt{\frac{2n+3}{n^4-n^2+2}}=\lim\limits (2-\frac{1}{n})\sqrt{\frac{\frac{2}{n}+\frac{3}{n^2}}{1-\frac{1}{n^2}+\frac{2}{n^4}}}=0\)