[中學] 不等式
a為實數 若二次不等式(2a-3)x^2 -2ax +(a+2) <0 沒實數解
求a的範圍
我先用條件b^2-4ac<0 這裡是系數並不是答案a
但是解答上面還多一個條件 2a-3<0
為何要多那個條件?
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◆ From: 125.230.177.215
推
03/04 00:00, , 1F
03/04 00:00, 1F
推
03/04 00:03, , 2F
03/04 00:03, 2F
他不為0 但是2a-3<0那邊就不知道原因了...
推
03/04 00:09, , 3F
03/04 00:09, 3F
※ 編輯: qazasd03 來自: 125.230.177.215 (03/04 00:11)
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03/04 00:21, , 4F
03/04 00:21, 4F
推
03/04 00:24, , 5F
03/04 00:24, 5F
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03/04 00:25, , 6F
03/04 00:25, 6F
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03/04 00:27, , 7F
03/04 00:27, 7F
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03/04 00:28, , 8F
03/04 00:28, 8F
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03/04 00:29, , 9F
03/04 00:29, 9F
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03/04 00:30, , 10F
03/04 00:30, 10F
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03/04 00:30, , 11F
03/04 00:30, 11F
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03/04 00:30, , 12F
03/04 00:30, 12F
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03/04 00:31, , 13F
03/04 00:31, 13F
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03/04 00:39, , 14F
03/04 00:39, 14F
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03/04 00:45, , 15F
03/04 00:45, 15F
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03/04 01:21, , 16F
03/04 01:21, 16F
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03/04 01:22, , 17F
03/04 01:22, 17F
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03/04 01:23, , 18F
03/04 01:23, 18F
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03/04 09:24, , 19F
03/04 09:24, 19F
推
03/04 12:15, , 20F
03/04 12:15, 20F
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