9. Which of the following curve is tangent to the surface x2+ y2-z=1 when t = 1? (A)
(B)
(C)
(D)
(E)None of the above
阿摩線上測驗
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阿摩線上測驗
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9. Which of the following curve is tangent to the surface x2+ y2-z=1 when t = 1? (A)(B)(C)(D)(E)None of the above