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8. The following function is continuous: f_{2}: \mathbf{R} \rightarrow \mathbf{R}, f_{2}(x)=\left\{\begin{array}{ll}
\tanh \left(\frac{1}{x^{2}}\right), & x \neq 0 \\
1, & x=0
\end{array}\right.
Fig: 1
Fig: 2
Fig: 3
\tanh \left(\frac{1}{x^{2}}\right), & x \neq 0 \\
1, & x=0
\end{array}\right.
Fig: 1
Fig: 2
Fig: 3
