Evaluate : `int ("cos (log x)")/(x) " dx "`

Explanation

To evaluate the integral \( \int \frac{\cos(\log x)}{x} \, dx \), we can follow these steps:

### Step 1: Substitution
Let \( t = \log x \). Then, we differentiate both sides:
\[ \frac{dt}{dx} = \frac{1}{x} \implies dt = \frac{1}{x} \, dx \]
This means that \( \frac{dx}{x} = dt \).
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