15_4_15 - 15. is the curve r = a cos ti + a sin tj, (0 t 2...

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15. is the curve r = a cos t i + a sin t j , ( 0 t 2 π) . I x dy = Z 2 π 0 a cos t a cos t dt = π a 2 I y dx = Z 2 π 0 a
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