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已知eqId1dbfae152eee49a2a0681b98d64db066.
(1)求不等式eqIdf80973fcf8c34634aaf2ff2aabd3e57f的解集;
(2)若存在eqIdbe21857de45642488c3d5d7e1adcccb5,使得eqIdeb3d1e1c202e45c48a72535659e46190成立,求实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围
已知函数eqId454005abf6904368b36b2b59d1e663f2恒成立.
(1)求eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围;
(2)若eqIda4be99d332154d13a4a6ed1ff6444fe7的最大值为eqIdf458db68122849abb588feb2e682d9ac,当正数eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7满足eqIda0c30525f97449748596c02e9c2429cb时,求eqIdd1158ef9ca024f92af1ac2b4c5f78fa7的最小值.
对于eqId3eb7762bb4004d8ba6c01e5de1dd46e3,下列不等式中不正确的是(   )
A.eqIdef68771d74654a7ba641987ebad5302fB.eqId5c60d8ca9b0b451cb8e783b5f5d23c25
C.eqId3a33a797750b473c99670d933efdeee9D.eqIdfe5bc28e7b2d49e185c6d0537d9a60e9
函数eqId521a875fb6db492eb41e753d3e01e07d的最小值为________.
已知不等式eqIdc1f41ec6e5c949f8b2427bbac75914b5,对任意eqIdfb2202b3e500470988f38975f321c6e2恒成立,则实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是__________.
已知eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7eqIdad7cefefaba947e1a168bca491c4fca1eqId8d7d3bd0072f47059a502cd49c202fb4且满足eqId142fb6f8712a4e04a73b56741b7207aaeqId57f20bfa2b1944708e8f837148e64f67,则下列不等式一定成立的是(   )
A.eqId9bf2b9850c194baf89f947cc964f9a14B.eqIdf617ffecfc7245dcacf9a80bb263793dC.eqIdc0645fa888a84bfd84017c7ea1f3e30fD.eqIdf22deed881fb47d899bb6ebd0db34401
难度: 0.85 | 2020·河北高一期末
已知eqIda6453b8be0a14077992698a2cb09303eeqId294c874f059d4c3687b15185c2f809ca,则下列结论正确的是(   )
A.eqId2a86b8bdbbd8438cb16ba33d1dbc6c47B.eqIda6da7ed4e7a2416d8a8a26d15cca0ddb
C.eqIdcde1dbb5d91c4ca393703f82b50db53eD.eqId2d0a03aa3ec04abcb2217ab77b0e3403
eqId142fb6f8712a4e04a73b56741b7207aa,则下列不等式成立的是(   )
A.eqIdfd3c22c02e1d4e189f393165ebe9feb3B.eqIdba2e5ba6cb1249f2ad42ba5d138805e5C.eqId1398483bd56e4e7fb62b5381c665ce58D.eqId3810741434d84d679612eeffadf62ac8