Question
Evaluate the following :
$\int \sqrt{\frac{9+x}{9-x}} \cdot d x$
$\int \sqrt{\frac{9+x}{9-x}} \cdot d x$
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| X=x | 1 | 2 | 3 |
| P(X) | $\frac{1}{5}$ | $\frac{2}{5}$ | $\frac{2}{5}$ |
If $\int_a^a \sqrt{x} d x=2 a \int_0^{\pi / 2} \sin ^3 x d x$, find the value of $\int_a^{a+1} x d x$.
