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已知eqId71867f4695f2469da1e066248d7a75f7eqId23532b1426544b029bdd8b7b74411643,且eqIdbf80e33f8af0497793eeb1eb2a0e416e//eqId26d0383ebc3f44c2984e80b88390a5f5,则eqId70c52126b23a4d5388d832c32cc794a4(   ).
A.-3B.3C.eqId4adf22999d4e47da945bc7c62e3f9824D.eqIda8012d5322b240128851ebf3cd086e12
更新:2020/03/29 难度:0.94 题型:单选题 组卷:0
函数eqId9862b8d68f4f49e39512d94b420285c1(其中eqId8c5019be9b774b85b097462984fe0698)的图象如图所示,为了得到函数eqId6dd3a865f12140f892b48ce2863da1aa的图象,只需将eqId4837c94ef0ff4dcf9b1dda4df363275a的图象上所有点( )
figure
A.向右平移eqId4bbbce4c9d174148a92193e26d43bd72个单位长度B.向左平移eqId4bbbce4c9d174148a92193e26d43bd72个单位长度
C.向右平移eqIdd3e88ecbd2db456396e01302a43b93d9个单位长度D.向左平移eqIdd3e88ecbd2db456396e01302a43b93d9个单位长度
更新:2020/03/29 难度:0.94 题型:单选题 组卷:1541
如图所示,在平行四边形ABCD中,点M是对角线AC的靠近C点的三等分点,过点M的直线分别与射线ABAD交于EF两点.已知eqIda9f5474d8a9f4fa98831807c2f30be60eqIdca0bf53d98214f31b020772bbc391908,则x+4y的最小值是(   )
figure
A.6B.3C.4D.2
更新:2020/03/29 难度:0.65 题型:单选题 组卷:0
如图,在正方形eqId5ce7a06ae7a34393b92b5277978ac014中,点eqId93cbffaa5ae045d6ac45d1e979991c3aeqIde3de99d6c54049cc9915165f22199e1f的中点,点eqId63db14a5b4334f3ea583c8fb12b0d175满足eqIddbc5b7b1a31b4828ae528572a17a915a,那么eqId88d0a6f524be4a69852fdf736fbdb0b6(    )
figure
A.eqId48b123cefeb848cb8baf41781926e165B.eqId29db0df55eeb493aafba82a7e97b9439
C.eqId2f65cc2f555246969657d8965eacdae7D.eqId282f4a2b48484ef9a3fb3fb49ae0507d
更新:2020/03/29 难度:0.85 题型:单选题 组卷:0
eqId3e56dc28bc2b42fe86d0857388b93006的图象关于直线eqIdac4cb171fd8c46eca17c4bd04e28eebd对称,且当eqId145940d03af4447eabd753d76abd2a1d取最小值时,eqId50b79bc3dd2344af83c4729bc52c5401,使得eqId0b560596f5ae46058574caca1a57f863,则eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是______.
更新:2020/03/29 难度:0.65 题型:填空题 组卷:0
已知向量eqId5166d4af312b4c3abcf50fa8c7313597eqId4d07de45c9c84cfeb0baa06a400eee81
(1)若eqId0ecc330e160041ff8256f2d544b748c6eqId51c5cbf6c1ac4d09950e7ab299822bac,且eqIdef07e15222144bd691477e4942c7f55d,求实数eqId5f420ef2d0b94c4b8a5d8e20a5d1ce2c的值;
(2)若eqId28f7f837840d468f82a62728f9116bf3,求eqIdfc1ad564f06546869e44d6a84b22b73a的最大值.
更新:2020/03/29 难度:0.85 题型:解答题 组卷:0
已知向量eqId9c280684f7274745b71d82c74a647f69eqIded010e257ecf411baf568b7ba18abf48,则eqId3842980934ac4a0fb34e39414aeb1b72(   )
A.eqId65021072e3ee4edc934739d219c8c5e2B.2C.eqId295fc8b6b6304713ba8fa91145a7091eD.50
更新:2020/03/29 难度:0.85 题型:单选题 组卷:14