Electric field from infinitely large metal

Electricity and Magnetism Level 2

Two infinitely large metal sheets have surface charge densities \( + \sigma \) and \( - \sigma, \) respectively. If they are kept parallel to each other at a small separation distance of \( d, \) what is the electric field at any point in the region between the two sheets?

Use \( \varepsilon_{0} \) for the permittivity of free space.