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定义eqIddc7a9b6ee25a45f79b440ea98cac3f37,已知函数eqId4837c94ef0ff4dcf9b1dda4df363275aeqId28c4c21271884dfeac29ce0222782376的定义域都是eqId7dcd2312d0bf4bb1befdfcc170e45791,现有下述命题:
①若eqId4837c94ef0ff4dcf9b1dda4df363275aeqId28c4c21271884dfeac29ce0222782376都是奇函数,则eqId0ac17612cbc34b468b35eb8cfd79cce4为奇函数;
②若eqId4837c94ef0ff4dcf9b1dda4df363275aeqId28c4c21271884dfeac29ce0222782376都是偶函数,则eqId0ac17612cbc34b468b35eb8cfd79cce4为偶函数;
③若eqId4837c94ef0ff4dcf9b1dda4df363275aeqId28c4c21271884dfeac29ce0222782376都是增函数,则eqId0ac17612cbc34b468b35eb8cfd79cce4为增函数;
④若eqId4837c94ef0ff4dcf9b1dda4df363275aeqId28c4c21271884dfeac29ce0222782376都是减函数,则eqId0ac17612cbc34b468b35eb8cfd79cce4为减函数;
则这些命题中,真命题的个数为______个.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
已知函数eqId9b37d03e47a347fc8fab9f814ba5fac4的定义域是eqId3a38395f01e941a8ba443c73b054ff57,则函数eqId2adfa89a34da49f9822a626ecdd437c6的定义域是______.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
已知关于eqId8e15963708e9415da25069fea5906e24的不等式eqIdcb5abf778e404afbbf5b31e979251e2a的解集为eqId2381423d4cd146cab95f55527681a766
(1)当eqId06cc9b4949ce4809a05ce82e20fa6282时,求集合eqId2381423d4cd146cab95f55527681a766
(2)若eqId81f820297b884889b3a8fa7a51c54a2eeqId6e7226089f654614998d0d62c71fd351,求实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围.
更新:2019/11/20难度系数:0.85题型:解答题组卷:0次
eqId5b8b1090d2e841a6a927500d68995110eqId55d75a6d586f47d581852fe1a98118ed,在区间eqIdeab809422ab346a2a4057562560ff62c是减函数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是(   )
A.eqId5dd3ac50978749349a9fb2c49012e05eB.eqId62c6ea37d2e4465fa464ff79fe7b6c4eC.eqId8f3e391dadb242df97990cbcc233f499D.eqId77d946a105a24f62b120895d662a668a
更新:2019/11/20难度系数:0.85题型:单选题组卷:0次
eqId9b37d03e47a347fc8fab9f814ba5fac4eqId1942541e3e0c43ac97fcf12200fe70a2是两个不同幂函数,集合eqId3377833fd0054545b99c4e564de5a812,则集合eqId2381423d4cd146cab95f55527681a766中元素个数为(   )
A.1或2或0B.1或2或3C.1或2或3或4D.0或1或2或3
更新:2019/11/20难度系数:0.85题型:单选题组卷:0次
eqId4837c94ef0ff4dcf9b1dda4df363275a是定义在eqId7dcd2312d0bf4bb1befdfcc170e45791上的函数,
(1)若存在eqId45be01ddcf39491bafab90fdfc1ee7c1,使eqIde9b9b3014d47445a89dbdc3334d461f6,则函数eqId4837c94ef0ff4dcf9b1dda4df363275aeqId7dcd2312d0bf4bb1befdfcc170e45791上单调递增;
(2)若存在eqId45be01ddcf39491bafab90fdfc1ee7c1,使eqId3c37c97d5cfb4cb4907c309e0b4954a2,则函数eqId4837c94ef0ff4dcf9b1dda4df363275aeqId7dcd2312d0bf4bb1befdfcc170e45791上不可能单调递增;
(3)对任意eqId45be01ddcf39491bafab90fdfc1ee7c1,使eqId3c37c97d5cfb4cb4907c309e0b4954a2,则函数eqId4837c94ef0ff4dcf9b1dda4df363275aeqId7dcd2312d0bf4bb1befdfcc170e45791上单调递增;
(4)函数eqId4837c94ef0ff4dcf9b1dda4df363275a对任意实数eqId8e15963708e9415da25069fea5906e24都有eqId7fe313f8ee2d4c989a00c4a91def92a1,那么eqId4837c94ef0ff4dcf9b1dda4df363275aeqId7dcd2312d0bf4bb1befdfcc170e45791上是增函数.
以上命题正确的序号是________.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
eqId982da3835b7946d999cc8604a2ece266eqId8164502d09d44990ac4f2f73ea67e37a ,则关于eqId8e15963708e9415da25069fea5906e24的不等式eqId5b5f76b848e14e6899f690c821b0f89f的解集为________.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
已知eqIdc13953f2514e4c8f9c8aaaf5241c33aceqId4eb56f42ca674f2f9c9101b548763159满足eqId536e1e246b124defb5543e514e8ba507,则eqIdabe800075e184e2080060a1d0c060198的取值范围是________.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
已知eqIdf8222b8494e345bfa3082e010b0ef007eqIdd7be5abad1e34f6db17a56660de8d54feqId2381423d4cd146cab95f55527681a766的关系为________.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
已知幂函数eqId4f79a0d928ed4772a5ccef2abaa84308为偶函数且在eqIddca4c31f92e1447fb6eceb9fdf294175上是减函数,则eqId4837c94ef0ff4dcf9b1dda4df363275a的解析式为________.
更新:2019/11/20难度系数:0.85题型:填空题组卷:0次
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