Differentiate $x^{2} t a n x .$

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Solution

We have $\frac{d}{d x} (x^{2} t a n x)$

= ${x^{2} . \frac{d}{d x} (t a n x) + t a n x . \frac{d}{d x} (x^{2}) .}$

= $(x^{2} s e c^{2} x + 2 x t a n x) .$

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