Integrate the following functions w.r.t x
`(1+ cos x)/(x+sinx) dx `

Explanation

To solve the integral \( \int \frac{1 + \cos x}{x + \sin x} \, dx \), we will follow these steps:

### Step 1: Substitution
Let \( u = x + \sin x \).

### Step 2: Differentiate \( u \)
Now, we differentiate \( u \) with respect to \( x \):
\[
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