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A particle has shifted along some trajectory in the plane xy from point 1 whose radius vector r1 = i 2j to point 2 with the radius vector r 2 = 2i - 3j. During that time the particle experienced the action of certain forces, one of which being F = 3i 4j. Find the work performed by the force F. (Here 7.1, r2, and F are given in SI units).

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