Let \( I=\int_{a}^{b}\left(x^{4}-2 x^{2}\right) d x \). If \( I \) ...

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Let \( I=\int_{a}^{b}\left(x^{4}-2 x^{2}\right) d x \). If \( I \) is minimum, then the ordered
\( \mathrm{P} \) pair \( (a, b) \) is (2019 Main, 10 Jan I)
WV
(a) \( (-\sqrt{2}, 0) \)
(b) \( (0, \sqrt{2}) \)
(c) \( (\sqrt{2},-\sqrt{2}) \)
(d) \( (-\sqrt{2}, \sqrt{2}) \)
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