共50条信息
已知\(a={{1.9}^{0.4}}\),\(b={lo}{{{g}}_{0.4}}1.9\),\(c={{0.4}^{1.9}}\),则
若\(x < 0\),则\({{x}^{2}},2x,x\)的大小关系是
若\(a{ > }b{ > }1{,}0{ < }c{ < }1\),则\(({ })\)
设\(a > 1 > b > -1\),则下列不等式一定成立的是
设\(a=6^{0.4}\),\(b=\log _{0.4}0.5\),\(c=\log _{8}0.4\),则\(a\),\(b\),\(c\)的大小关系是\((\) \()\)
已知\(a={{5}^{{lo}{{{g}}_{2}}3.4}}\),\(b={{5}^{{lo}{{{g}}_{4}}3.6}}\),\(c={{\left( \dfrac{1}{5} \right)}^{{lo}{{{g}}_{3}}0.3}}\),则\((\) \()\)
已知\(a={{3}^{0.8}},b={{\left( \dfrac{1}{3} \right)}^{-1.2}},c=2\lg 3\),则\(a,b,c\)的大小关系为\((\) \()\)
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