首页>高中数学综合库>函数与导数>函数及其性质>函数的基本性质>函数的单调性>定义法判断或证明函数的单调性
题型:单选题 难度:0.4 引用次数:899 更新时间:2020/2/15 15:16:34 题号:8794858
定义在eqId7dcd2312d0bf4bb1befdfcc170e45791上的偶函数eqId4837c94ef0ff4dcf9b1dda4df363275a满足:对任意的eqId427aa61f189848fb9bbbabb798bfd6f0,有eqId95b50a440f6e40aa8c8788ff9002c5a9,且eqId5e57bfb26ff14586bb537fa29df4ec58,则不等式eqIda440357515814ea59142d68957bd0373解集是(   )
A.eqId640a181ef9574f1389108d20ca8863b5B.eqId7ca2091cbe844b4b88b3b5c085b9a2a9
C.eqId334e351ae51749839ee7c09cae214adeD.eqId0ec29daa82784f0e80b9a246cf927ebe

类题推荐

难度: 0.4 |
典型同步
【推荐1】eqIde4a0e3706b56447b90fe1b2781f91b14是定义在eqId7dcd2312d0bf4bb1befdfcc170e45791上的函数.
①若存在eqId45be01ddcf39491bafab90fdfc1ee7c1,使eqId9878d296b1ef4f89a8e2f730b06e3b0f成立,则函数eqIde4a0e3706b56447b90fe1b2781f91b14eqId7dcd2312d0bf4bb1befdfcc170e45791上单调递增;
②若存在eqId45be01ddcf39491bafab90fdfc1ee7c1,使eqId40078a1f8d854d3daaca35c6ce287840成立,则函数eqIde4a0e3706b56447b90fe1b2781f91b14eqId7dcd2312d0bf4bb1befdfcc170e45791上不可能单调递减;
③若存在eqId310124eaa0a648b0ab85772c1a00bb9f对于任意eqIdce3175c2cdf64557b8637cfe1addd496都有eqId9523e7281ef740ef94b6cee9fe34ed6a成立,则函数eqIde4a0e3706b56447b90fe1b2781f91b14eqId7dcd2312d0bf4bb1befdfcc170e45791上单调递减.
则以上真命题的个数为(   )
A.0B.1C.2D.3
更新:2018/11/30 |题型:单选题 |组卷:299
难度: 0.4 |
【推荐2】已知函数eqIdad571ca61e0f4d488f01d8af9f88e8b3,则不等式eqIdeca73312b677480594484999fb0bea23的解集是(    )
A.eqId33ed92ab510d483cb39247fcd3d3096aB.eqId3c64ef32ec2541f3864b43829e6087c1C.eqId5030fed1e59540a4833b05a2d4174c1aD.eqId3045a04603304cc592dbc0f88c148b55
更新:2020/04/08 |题型:单选题 |组卷:1421
难度: 0.4 |
【推荐3】eqId872fc6b7cd34495e8fb0f581d0477933,则对任意实数eqId75cea6bfb0dd486cb2c6c7bac50087ed,“eqId1fe905b77c43480c8395a2f9fdf12578”是“eqIde103a12a9769441ea4f249a87b5b1a72”的(   )条件
A.充分不必要B.必要不充分C.充要D.既不充分也不必要
更新:2020/09/09 |题型:单选题 |组卷:449