[中學] 過兩點與平面夾60度角的平面方程式
設平面E過A(0,1,0),B(0,0,-1),且與平面F:x+z-3=0有一夾角為60度,
求平面E方程式為何?
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習作答案只有4x+y-z=1
但一般來說不都有2個解?
以這題來說,y-z=1不合嗎?
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09/25 06:32, , 1F
09/25 06:32, 1F
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09/25 12:28, , 2F
09/25 12:28, 2F
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09/25 16:23, , 3F
09/25 16:23, 3F
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09/25 18:42, , 4F
09/25 18:42, 4F
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09/25 23:34, , 5F
09/25 23:34, 5F
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09/25 23:57, , 6F
09/25 23:57, 6F
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09/25 23:59, , 7F
09/25 23:59, 7F