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(a) [6 marks] Determine the value of coefficient a for which the vector field F = (ayz3 + x2,2x23, 6.xyz2 + 2xz) is irrotatio

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SOLUTION: [a] F = (ay z² +2², 2x2², 6xyz²+2 xyz Fx Fy fz Vector field is irrotational if VXF=0 =) alaxy 2 to Ex fy E U lax gSOLUTION [b F = ( zyz+23, 2xZ3, 6 xyz?+ 2x2) we have conservative vector field as DXF=0 which means F =(fx, fy fa> of eller wfrom o f2 = 6xyz2 +22x + g (2) - by comparing 6 and ② gl (2) =0 g (2) = Here we have If=Qxy z3 + ²x +C which is our potentiaFido = 3 [2423 +z? + [2x23] + 6xy.lt +2x (5) 3 Sfidro f.dr= 64 23+322 + 2xy3 + 2xy + x​​​​​

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