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 P: 64 Hello all, I understand the fact that the principles LaTeX Code: F= \\nabla \\phi . LaTeX Code: \\nabla \\times F = 0 . must apply in order for a force field to be conservative however what i dont get is why showing: LaTeX Code: f_y= g_x, f_z= h_x, g_z= h_y where subscripts are what you are taking the derivative with respect to. is a means to prove the above laws are in effect. i assume it has to do with the fact that subtracting the partial derivatives will give you zero. thank you very much for any help sleventh