MCQ
$\int_0^{\frac{\pi}{4}} \tan ^2 x d x=$
- A$\frac{\pi}{4}$
- ✓$1-\frac{\pi}{4}$
- C$\frac{\pi}{4}-1$
- D$1+\frac{\pi}{4}$
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| X | -4 | -3 | -2 | -1 | 0 |
| $P(X)$ | 0.1 | 0.2 | 0.3 | 0.2 | 0.2 |