) Calculate (8(x² - y)i + 8(y² + x)j³) · dř if: (a) C is the circle (x − 4)² + (y − 8)² = 25 oriented counterclockwise. - Sc (8(x² − y)i + 8(y² + x)j') · dř = - (b) C is the circle (x − a)² + (y - b)² = R² in the xy-plane oriented counterclockwise. - Sc (8(x² − y)i + 8(y² + x)j') · dř = .

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A: Topic = Geometry