Forces of magnitudes 4, 3, 2 units act along the direction of 3i +i+2k, 4i-2j+2k, 2i-3j-4k respectively on a particle which is displaced from poi (2, 1,-2) to (

Forces of magnitudes 4, 3, 2 units act along the direction of 3i +i+2k, 4i-2j+2k, 2i-3j-4k respectively on a particle which is displaced from poi (2, 1,-2) to (4, -1, 1). Find the work done by the forces.