摘要: 设(且).g(x)是f(x)的反函数. (Ⅰ)求, (Ⅱ)当时.恒有成立.求t的取值范围, (Ⅲ)当0<a≤时.试比较f与的大小.并说明理由.
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(2010四川文数)(1)设集合A={3,5,6,8},集合B={4,5, 7,8},则A∩B等于
(A){3,4,5,6,7,8} (B){3,6} (C) {4,7} (D){5,8}
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(2010四川文数)(1)设集合A={3,5,6,8},集合B={4,5, 7,8},则A∩B等于
(A){3,4,5,6,7,8} (B){3,6} (C) {4,7} (D){5,8}
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