Integrate the functions`sqrt(4-x^2)`

Explanation

To integrate the function \( \sqrt{4 - x^2} \), we can follow these steps:

### Step 1: Rewrite the Integral
We start with the integral:
\[ \int \sqrt{4 - x^2} \, dx \]
We can rewrite \( 4 \) as \( 2^2 \), so we have:
...