( ) 下列方程式何者恰有一組實數解﹖【多選】(A) x + log2 8x= 5(B) x = 2| log2 x|(C) log2 |x|=2 −| x|(D) x + log2x= 0(E

問題詳情

( ) 3. 下列方程式何者恰有一組實數解﹖【多選】
(A) x + log2 8x= 5
(B) x = 2| log2 x|
(C) log2 |x|=2 −| x|
(D) x + log2x= 0
(E) 2 −| x| =|log2 x| 。

參考答案

答案：D[無官方正解]
難度：困難0.357143
統計：A(0),B(2),C(5),D(5),E(1)

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