E field due to infinite sheets

{taylor}

1. The problem statement, all variables and given/known data



2. Relevant equations

E_{inf sheet}= σ/2ε0

3. The attempt at a solution

I understand that the -σ sheet will have E field lines pointing towards the sheet. But I don't understand how to add the other sheets to find the E field in a specific region.

Redbelly98

You'll need to figure out the field for each sheet, and it's direction (i.e. either towards or away from the sheet). Then it's vector addition to get the field within each region.