1. Civil Engineering Application A building is being constructed and the structural engineer is calculating the bending moment of the main beam under its applied loading. Using the central difference approximation, estimate the bending moment using the bending equation the beam: f(x) = 0.1x4 0.15x3 0.5x2 0.25x + 1.2 at distance x = 0.4m using AX = 0.6m