[中學] 空間向量
設O ( 0,0,0 ),A ( a,b,c ),B ( b,c,a ),C ( c,a,b ),
平面ABC 的方程式為x + y + z = 1
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且OA ⊥ OB
求Δ ABC 的面積
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09/27 22:18, , 1F
09/27 22:18, 1F
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09/27 22:19, , 2F
09/27 22:19, 2F
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09/27 22:19, , 3F
09/27 22:19, 3F
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09/27 22:19, , 4F
09/27 22:19, 4F
推
09/27 22:23, , 5F
09/27 22:23, 5F
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09/27 22:23, , 6F
09/27 22:23, 6F
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09/27 22:24, , 7F
09/27 22:24, 7F
推
09/27 22:50, , 8F
09/27 22:50, 8F
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09/28 18:45, , 9F
09/28 18:45, 9F
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