hmm maybe I interpreted wrong
so I guess the statement "if the Line integral of an enclosed curve is zero, then the vector field must be conservative." is false
Thank you so much sir, I think I get it now.
Which book is it? Maybe it's good to avoid it in the future!
It was my bad and hasty interpretation. But the Book name is Calculus Early Transcendentals(2nd E) by Briggs Cochran Gillett
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