Let \( f: R \rightarrow R \) be defined as \( f(x)=|x|+\left|x^{2}-1\right| \). Total number of ...

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Let \( f: R \rightarrow R \) be defined as \( f(x)=|x|+\left|x^{2}-1\right| \). Total number of points at which \( f \) attains either a local maximum or a local minimum is
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