Calculate Sc (4(x²-y)i + 8(y² + x)}) · dr if: (a) C' is the circle (x − 8)² + (y – 5)² = 1 oriented counterclockwise. Sc (4(x² −y)i +8(y² + x)}).dr = - (b) C' is the circle (x − a)² + (y − b)² = R² in the xy- plane oriented counterclockwise. Sc (4(x² − y)i +8(y² + x)j) · dr = ¯ -

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