Find the distance between the points A(3,2,1), B(-1,2,-3).

Explanation

To find the distance between the points A(3, 2, 1) and B(-1, 2, -3), we can follow these steps:

### Step 1: Identify the coordinates of points A and B
The coordinates of point A are \( A(3, 2, 1) \) and the coordinates of point B are \( B(-1, 2, -3) \).

### Step 2: Write the position vectors of points A and B
The position vector of point A can be written as:
\[
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