particle 1 of charge q1 = 6.60×10-5 C and particle 2 of charge q2 = 3.30×10-4 C are fixed to an x axis, separated by a distance d = 0.100 m.

Calculate their net electric field E(x) as a function of x for the following positive and negative values of x, taking E to be positive when the vector E points to the right and negative when E points to the left.

What is E(-0.100)?
What is E(-0.040)?
What is E(0.080)?
What is E(0.130)?