\lim \frac { 1 } { n ^ { 2 } + 1 } = 0
Solve for l
\left\{\begin{matrix}l=0\text{, }&n\neq -i\text{ and }n\neq i\\l\in \mathrm{C}\text{, }&Im(\frac{1}{n^{2}+1})=0\text{ and }n\neq -i\text{ and }n\neq i\end{matrix}\right.
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Im(\frac{1}{n^{2}+1})l=0
The equation is in standard form.
l=0
Divide 0 by Im(\left(n^{2}+1\right)^{-1}).
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