As a particle moves along an x axis, a force in the positive direction of the axis acts on it. The plot shows the magnitude F of the force versus position x of the particle. The curve is given by F = a/x2, with a = 9.0 N·m2. Find the work done on the particle by the force as the particle moves from x = 1.0 m to x = 3.0 m by integrating the force function.