1. The problem statement, all variables and given/known data Here is the question, which itself is rather confusing. A nonuniform surface charge lies in the yz plane. At the origin, the surface charge den- sity is 3.5 μC/m^2. Other charged objects are present as well. Just to the right of the origin, the electric field has only an x component of magnitude 4.8 × 10^5 N/C. What is the x component of the electric field just to the left of the origin? The permittivity of free space is 8.8542 × 10^−12 C2/N · m^2. Answer in units of N/C 2. Relevant equations ø=∫E.dA = Q(enclosed)/ε(naught) σ = Q/A 3. The attempt at a solution So i drew the pictures, a 2D surface lying in the yz, with a point x with electric field value 4.8e5 N/C just to the right on the positive axis. I thought to myself the field will just be negative because its on the opposite side? Nope. Maybe it's the same? Nope. I then tried finding the difference, to no avail, and now I'm just stuck. Is there a better way for me to think about this problem that I'm not seeing, or is it just that obscure?