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6. 如圖(一)所示,直線 是兩條與 x軸平行且與圓 相切的直線,則b1 - b2之值為何?(A) -4 (B) - 2(C)2(D)4
問題詳情
6. 如圖(一)所示,直線
是兩條與 x軸平行且與圓
相切的直線,則b1 - b2之值為何?
(A) -4
(B) - 2
(C)2
(D)4
參考答案
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