A gas expands in a piston-cylinder device from volume `V_(1)` to `V_(2)`, the process being described by `P = a//V + b`, a and b are constants. Find the work done in the process.

Explanation

To find the work done during the expansion of a gas in a piston-cylinder device, we start with the given pressure-volume relationship and apply the formula for work done in a thermodynamic process.

### Step-by-Step Solution:

1. **Identify the Work Done Formula**:
The work done \( W \) during a gas expansion is given by the integral of pressure \( P \) with respect to volume \( V \):
\[
W = \int_{V_1}^{V_2} P \, dV
...