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Consider the above curve, which ends on xz plane. For this curve and vector field of
()/(bar) (A)=yhat(a)_(x)-xhat(a)_(y)+(xy-z)hat(a)_(z), find the vector line integral of (\int_L )/(b)ar (A)*(d)/(b)ar (l)= ?
Hint: Cylindrical coordinate system can give much simpler solution.