\begin{aligned} ext { Let } \mathrm{f} ext { be the function defined by }\ f(x)= \begin{cases}\frac{x^2-1}{x^2-2|x-1|-1}, & x
eq 1 \ 1 / 2, & x=1\end{cases} \end{aligned}

Question

\begin{aligned} 	ext { Let } \mathrm{f} 	ext { be the function defined by }\ f(x)= \begin{cases}\frac{x^2-1}{x^2-2|x-1|-1}, & x 
eq 1 \ 1 / 2, & x=1\end{cases} \end{aligned}

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\begin{aligned} \text { Let } \mathrm{f} \text { be the function defined by }\\ f(x)= \begin{cases}\frac{x^2-1}{x^2-2|x-…

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