![image](https://tex.z-dn.net/?f=lim_%7Bn-%3E%5Cinfty%7D+%5Cfrac%7Bn%5E2%2B2n%2B1%7D%7Bn%5E2-1%7D%3D%5C%5C%5C%5Clim_%7Bn-%3E%5Cinfty%7D+%5Cfrac%7B1%2B%5Cfrac%7B2%7D%7Bn%7D%2B%5Cfrac%7B1%7D%7Bn%5E2%7D%7D%7B1-%5Cfrac%7B1%7D%7Bn%5E2%7D%7D%3D%5C%5C%5C%5C%5Cfrac%7B1%2B0%2B0%7D%7B1-0%7D%3D1)
\infty} \frac{n^2+2n+1}{n^2-1}=\\\\lim_{n->\infty} \frac{1+\frac{2}{n}+\frac{1}{n^2}}{1-\frac{1}{n^2}}=\\\\\frac{1+0+0}{1-0}=1" alt="lim_{n->\infty} \frac{n^2+2n+1}{n^2-1}=\\\\lim_{n->\infty} \frac{1+\frac{2}{n}+\frac{1}{n^2}}{1-\frac{1}{n^2}}=\\\\\frac{1+0+0}{1-0}=1" align="absmiddle" class="latex-formula">