Electric Field of a Non-Uniformly Charged Rod

A non-conducting rod of length L = 0.5 m has a non-uniform linear charge density given by $\lambda(x) = \lambda_0 (1 - x/L)^2$, where $\lambda_0 = 5.0 \times 10^{-9}$ C/m and $x$ is the distance from one end. What is the magnitude of the electric field at a point on the rod’s perpendicular bisector, 3.0 m from its center?