An infinite plate (slab) with permittivity e=1 is uniformly charged with free charge of density p. The thickness of the plate is equal to 2d.
Find:
(a) the potential as functions of distance x from the middle point of the plate(where the potential is assumed to be equal to zero); having chosen the x coordinate axis perpendicular to the plate
(b) draw the approximate graphycs of the potential (a(x))