QUESTION

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*3.37 Let $\mathbf{A}=\rho \sin \phi \mathbf{a}_{\rho}+\rho^{2} \mathbf{a}_{\phi}$. Evaluate $\oint_{L} \mathbf{A} \cdot d \mathbf{l}$ given that (a) $L$ is the contour of Figure 3.30(a) (b) $L$ is the contour of Figure 3.30(b) (a) (b) Figure 3.30 For Problem 3.37.

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