GA_CIRC

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c) y = -x/2

12. A corda mede (60 Ë61)/61 unidades de comprimento

13. [B]

14. a) (x - 1)£ + (y + 2)£ = 25

b) —•: (x - 6)£ + (y - 2Ë3)£ = 12 —‚: (x - 14)£ + (y - 14Ë3/3)£ = 196/3

15. (3 + Ë2/2; 4 - Ë2/2) e (3 - Ë2/2; 4 + Ë2/2)

16. a) x - 2y - 1 = 0 b) (x - 3) + (y - 1)£ = 1

17. [A]

15/01/2010

8:53

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