组卷网>知识点选题>指数函数求参数值或范围问题
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| 共计 193 道试题
填空题 | 较易(0.85) | 2022·全国高三专题练习
1 . 函数eqId75413a1554f14fcdb0aed44b28757d4d定义域为(﹣∞,1)∪(1,+∞),则满足不等式axfa)的实数x的集合为______
更新:2021/09/19组卷:32
2 . 已知eqId80fa3b93802841f390c4f3b8c8a240e8:函数eqIdcd3092ab1c12417eb4f9185f9b9d7925eqId38a1a72a865d4179b3b243977e23dce4上单调递减,eqIda5d0fc594d4048549d5bbda484fbecc8:关于eqIda9cd3f94eb8045438f75e9daccfa7200的方程eqId39d2210ae90d4deaa28be68e01287d71的两根都大于1.
(1)当eqId56625e9012db4a5ba62a101f2d327bdf时,eqId80fa3b93802841f390c4f3b8c8a240e8是真命题,求eqId70a27b6ddf6b478285353abb3b1f3741的取值范围;
(2)若eqId80fa3b93802841f390c4f3b8c8a240e8为真命题是eqIda5d0fc594d4048549d5bbda484fbecc8为真命题的充分不必要条件,求eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围.
解答题 | 一般(0.65) | 2021·河南
3 . eqIdb610ae4b6c4747bf8a6938fce2b41192eqIdd951487aa2c84adebbd85d63425e0e52)是定义在eqId7dcd2312d0bf4bb1befdfcc170e45791上的奇函数,且eqIdc2a7f3e6021d4197b111553fe9c9cfc4
(1)求eqIdbd8d53f91e6f498dba596ff461a0c081
(2)eqId9ff583408e0e40caa9a72559e3a26cc4,求eqId28c4c21271884dfeac29ce0222782376eqIdd5962c71196d40b28b2ca0d7b748b66d上的最小值为eqId5c1c12d4b3ba4aaab6267324ae66c81e,求eqIda4be99d332154d13a4a6ed1ff6444fe7.
4 . 定义eqIdb185ed67a37548fd81c86ea454473584eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7中的最大值,函数eqIdd407ac6006544a89b9096178b7d3ef9e的最小值为eqId44925af6fb19413689ba5616e3647cba,如果函数eqIddd8a0b5bc6934e4f9f5e11b0ca980461R上单调递减,则实数eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围为___________
7 . 若指数函数eqId10852d81bc184140a7780250c82c6929的图象经过点eqId9d71a20dffcb40bf9f0a08e6188ee1ff,则eqId5a03d806387f4b5d8b5de0172913af28__________eqId12b770506cf6450dade431bf482159c4___________
单选题 | 较易(0.85) | 2021·江苏高一课时练习
8 . 函数eqId79ce43e259ad49e8911ae4478dd28283,满足对任意eqId70c08d40596445378a3ebc3942e99852,都有eqId5dc2a60f17944ffa9ec6574f1d308b89成立,则eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是(   )
A.eqIdcf0e4bb0507e4f2dbf59a7bdad7cf341B.eqIdfc199a8b9fa54dfe8f0496ee23ff0b9aC.eqId1bbf0a0030e44c9f88b49eae3caee502D.eqId42e5b892491a4916a70fc17f68adcac2
单选题 | 一般(0.65) | 2021·广东高三月考
9 . 已知函数eqIdb8c9b63e80c4496eb5fa49337164f971(其中eqId982da3835b7946d999cc8604a2ece266eqIdd951487aa2c84adebbd85d63425e0e52),若当eqIda70a080d4f064d2a87f6c7ec9545d7ef时,恒有eqIdfd40f59c4e814e9392e7463c1460b95d,则a的取值范围是(  )
A.eqId149d067cfea44b07a116ac87b8f9ec77B.eqIdb5988ca1efe449579a855a2dd06f02fd
C.eqId7c9e1800e6ba47479292a1553d9826e6D.eqId85d7c63376b44b2cbc7311f40349d70e