组卷网>知识点选题>抽象函数定义域求法
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1 . 给出下列命题,其中错误的命题是(   )
A.若函数eqId4837c94ef0ff4dcf9b1dda4df363275a的定义域为eqId7866cdd713694d23943f903588364452,则函数eqIdd483878ff01b4ee5a00d45197cac49b2的定义域为eqId22f160aab21b4185a2798e8d38a6df54
B.函数eqId2d41984812b94aaa8efbaf34f0e6b4fd的单调递减区间是eqIdfe6a989a623d4e69bd402eb92f4aae25
C.已知函数eqId4837c94ef0ff4dcf9b1dda4df363275a是定义域上减函数,若eqId736a361d3c0b40a7a45aab5769e46fad,则eqIde0f7fb42fda54a83915e1fd22a8a717a
D.两个函数eqIde0df0812ccfe4df1bb52ea557a4afdbaeqId98364016ef5c4653be24ed8638117202表示的是同一函数.
2 . 下列命题正确的是(   )
A.若函数f(x)定义域为[1,5],则函数f(2x+1)的定义域为[0,2]
B.f(0)=0是f(x)为奇函数的必要不充分条件
C.函数eqId352294a393ee482880b4e9a30143ebbe的最小值为-4
D.函数eqId0015d6ececa947b3b3ac2ee27d8b5ace 在区间(3m-2,m+2)内单调递增,则实数m的取值范围为eqId4918ddf865c048e3af933fef4bca8b7b
多选题 | 一般(0.65) | 2021·辽宁育明高中高二期中
3 . 下列四个命题为真命题的是(    )
A.eqIda1be0279d22d49ab9e27fd03672d9e2f使eqId6b4e9ae4ac0c46c99b8f7b9c93f297b6
B.已知函数eqId6ad3941cee564a4c846b53dbae07411f的定义域是eqId9ff3c9aa7a4a4b9397a6fe8a585a6983,则函数eqId0d3af78a813c49bc81f08fc152c3a3d0的定义域是eqIdf65c9c85c8224adab5cef5958804effd
C.函数eqIdc21da9b95bad44f69a52a135f5c75f23有唯一零点的充要条件是eqIdcfa8d49d96e5401095d36e73394f028e
D.命题“eqId6709283711bf4ae39fde99d031d3bb28eqId44c5d1d639164ef0bdad7cc330812740”的否定是“eqId1a594353304744bb91dd3e8408bf706deqId055e2a12c8834ba58fbd94e36ba2488e
单选题 | 一般(0.65) | 2021·江西高一期末(文)
4 . 已知eqId6f13759e937144069819aed2ae5a1057的定义域是eqId25c1d19292c945db8364408eafdfc66a,则eqIdd9b8f2b488914fed98c46a5e58c33bed的定义域为(   )
A.eqId66f3d7c53f38431f9d56c01a4409d44aeqId912eadc0a40c4262bbd82d2a8f4409b2B.eqId0801451e046748c19135cbc4f2ca6947eqId912eadc0a40c4262bbd82d2a8f4409b2
C.eqId6ac0d9dd19e643faa3dc7a4b2eb02a24eqId912eadc0a40c4262bbd82d2a8f4409b2D.eqId68c42e88f62a4c77892ae3ad42ea432beqId912eadc0a40c4262bbd82d2a8f4409b2
5 . 若函数eqId9b37d03e47a347fc8fab9f814ba5fac4的定义域是eqId1f0bdf0905964de69974073a47e88e98,则函数eqId4e87d2acbcd24faaa9d9cff8e1b1ef9f的定义域为___________.
单选题 | 较易(0.85) | 2021·黑龙江铁人中学高二期中
6 . 若函数eqId9b37d03e47a347fc8fab9f814ba5fac4的定义域是eqIdf4d3aaf6f2cb4903b6724a4f6781c6dc则函数eqId13a89a6b391f4983865c6e8a9d7decf6的定义域为(   )
A.eqIdf4d3aaf6f2cb4903b6724a4f6781c6dcB.eqId8b8dcafbc56c4601bfbbdc0961c651d0C.eqIdd4875002eab644559d85b2e36e903b70D.eqIdbe424e9b131746b2987ce0b5fee232c4
单选题 | 较易(0.85) | 2021·湖北荆州中学高三其他模拟
7 . 定义域是一个函数的三要素之一,已知函数eqIdb995fffde2f84f5ea9c3c8f974d01b8c定义域为eqId24e96c2dae5e49738bb9a488cd712698,则函数eqId75a81eabac3741b7859376028e41c87aeqId2788fabd3e104e32bdbd4305a098e975的定义域为(   )
A.eqId607237cdb8c04b8ca722ec0801f05f83B.eqId3485913926744af28ed40970772a3794
C.eqId9077f3b252694115b5a770e1e3977b76D.eqId1f7dfad6015242e6811e51e5319e041f
单选题 | 较易(0.85) |
8 . 已知函数eqId4837c94ef0ff4dcf9b1dda4df363275a的定义域为eqId0038ddcca427496bbaf235d2535158c3,若eqIdfeae986032e6430397610d83fa95aa22有定义,则实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是(   )
A.eqId71d6f8a0b39347b4b2c404b4aa580137B.eqId04546ea9714b4c4497ea4e20a69ef0eeC.eqId31ba4bd023ed4d9dafc4c593c624e0b6D.eqId4dd07ec665914689b02faf818ff64a4d
更新:2021/05/22组卷:722
多选题 | 一般(0.65) |
10 . 给出以下四个结论,其中所有正确结论的序号是(   )
A.若关于eqIda9cd3f94eb8045438f75e9daccfa7200的不等式eqId6f401c9f38814e0ba2ef3650090e17cd恒成立,则eqIdcf0e4bb0507e4f2dbf59a7bdad7cf341
B.方程eqIdb710445f5aed462cb0b615a3142d4d90有一正一负根的充要条件是eqId44fe1531113e411abbc8a88a2dedb152
C.若函数eqIdb0225d6052654ba58f42201646caa7ee的定义域为eqId44866d20a1d449ab9db7e7ea3026fadd,则函数eqId4837c94ef0ff4dcf9b1dda4df363275a的定义城是eqIdf173839cbdf549429066610d1a327f06
D.函数eqIdad004f4b6a36415ba536d53fdd74723f(其中eqId982da3835b7946d999cc8604a2ece266eqIdd951487aa2c84adebbd85d63425e0e52)的图象过定点eqId510e7ec518ff4e57886e36249011c3a3
更新:2021/04/29组卷:370
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