differentiation

Question: The function $f(x)={{x}^{2}}$is increasing in the interval



1) $(-1,\,1)$
2) $(-\infty ,\,\infty )$
3) $(0,\,\infty )$
4) $(-\infty ,\,0)$
Solution: Explanation: No Explanation
Increasing and Decreasing function

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