MCQ
$\int \tan ^8 x \cdot \sec ^4 x d x=$ _________ + C.
- A$\frac{\tan ^9 x}{9}-\frac{\tan ^7 x}{7}$
- B$\frac{\tan ^{11} x}{11}-\frac{\tan ^9 x}{9}$
- C$\frac{\tan ^9 x}{9}+\frac{\tan ^7 x}{7}$
- ✓$\frac{\tan ^{11} x}{11}+\frac{\tan ^9 x}{9}$
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$(A)$ : $\max \left\{\left|a_1\right|,\left|a_2\right|,\left|a_3\right|\right\} \leq|\vec{a}|$
$(B)$ : : $|\vec{a}| \leq 3 \max \left\{\left|a_1\right|,\left|a_2\right|,\left|a_3\right|\right\}$ તો