Question
\begin{aligned} \text { If } \mathrm{f}(\mathrm{x})=\frac{5^x+5^{-x}-2}{x^2}, \text { for } x \neq 0 \\
=\mathrm{k} \text { for } \mathrm{x}=0
\end{aligned}
=\mathrm{k} \text { for } \mathrm{x}=0
\end{aligned}
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$\lim _{y \rightarrow 1}\left[\frac{2 y-2}{\sqrt[3]{7+y}-2}\right]$