[計量] 一題計量 拜託解答
題目是這樣的
2 - (1/x) > 2
Column A Column B
x 1
我一開始的直覺是把(1/x)移到右邊 --> 兩邊消掉2
--> (1/x) < 0 --> x > 0
所以我選D
答案是給B
我後來算直接兩邊消掉2 --> 消負號 --> (1/x) < 0
--> x > 0
第三次.. 兩邊消2 --> -(1/x) > 0
--> 直接觀察 覺得應該x<0
我是哪裡犯錯了呢 一直想不通
請大家幫幫忙
謝謝
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