Evaluate : ` int x " sin"^(2) " x dx "`

Explanation

To evaluate the integral \( \int x \sin^2 x \, dx \), we can follow these steps:

### Step 1: Rewrite \( \sin^2 x \)
We can use the identity for \( \sin^2 x \):
\[ \sin^2 x = \frac{1 - \cos(2x)}{2} \]
Thus, we can rewrite the integral as:
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