Assume a planar rectangular sheet of charge centered in the $y-z$ plane at $x=0($the vector normal to the surface is in the $+-$hat$(x)$ direction$).$ What is $\frac{?}{\text{b}\text{a}\text{r}}(r)\frac{-}{b}ar(r{)}^{\text{'}},$ assuming $\frac{?}{\text{b}\text{a}\text{r}}(r)$ can represent any point in space?

$(x-x^{\text{'}})hat(x)+(y-y^{\text{'}})hat(y)$

$(x-x^{\text{'}})hat(x)+$yhat$(y)+$zhat$(z)$

xhat$(x)+(y-y^{\text{'}})hat(y)+(z-z^{\text{'}})hat(z)$