4. a Find the work done the force F = 3xyi - y'j moves a particle...

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4. a Find the work done the force F = 3xyi - y'j moves a particle along the curve C: y=2x²from (0,0) to (1,2) in the xy-plane. b Evaluate ff.dr Where = (2xy + z³)i+ x² + 3xz²k along the straight line C joining (1,- 2,1) and (3,2,4) 5. a Evaluate finds Where f= (x² + y²)-2x +2yzk and S is the surface of the 2x+y+ 2z= 6 in the first octant. 4. a Find the work done the force F = 3xyi - y'j moves a particle along the curve C: y=2x²from (0,0) to (1,2) in the xy-plane. b Evaluate ff.dr Where = (2xy + z³)i+ x² + 3xz²k along the straight line C joining (1,- 2,1) and (3,2,4) 5. a Evaluate finds Where f= (x² + y²)-2x +2yzk and S is the surface of the 2x+y+ 2z= 6 in the first octant.

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