中学学科网组卷网 教评网 学易书城
e卷通介绍 使用手册 收藏本站 有奖挑错建议
下列结论正确的是(   )
A.eqIdb12c3478707941ac9ea72839316c4250B.若eqIdc1019b1debc848ed94ad007f4a9d3633,则eqId71e570080d944aa99fe89e4b890956ca
C.当eqId2d569479cd1c43c1af15895792b64db6eqIde7320682fc974323b9e36812c8d054d9时,eqId00c717a5c862421ba59b07f0b65df247D.eqId204c30d46be24f238950f9821f10b3ac
更新:2020/2/17难度:0.85题型:单选题组卷:0
对在直角坐标系的第一象限内的任意两点eqId58fada709cd845aba2d819e971b46b4beqId9564a41f5da941ac81031133674c362d作如下定义:eqId2f5662a9d8a549d4be9aa47d49ca2a54,那么称点eqId58fada709cd845aba2d819e971b46b4b是点eqId9564a41f5da941ac81031133674c362d的“上位点”,同时点eqId9564a41f5da941ac81031133674c362d是点eqId58fada709cd845aba2d819e971b46b4b的“下位点”.
(1)试写出点eqIdbe4bc64925884f98ae1daea4881aa96d的一个“上位点”坐标和一个“下位点”坐标;
(2)设eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7eqIdad7cefefaba947e1a168bca491c4fca1eqId096e32e1d18145d199ccbacb5a9a85fe均为正数,且点eqId58fada709cd845aba2d819e971b46b4b是点eqId9564a41f5da941ac81031133674c362d的上位点,请判断点eqIde92e103504b04078b0cb42db9afc7dab是否既是点eqId58fada709cd845aba2d819e971b46b4b的“下位点”又是点eqId9564a41f5da941ac81031133674c362d的“上位点”,如果是请证明,如果不是请说明理由;
(3)设正整数eqIdf458db68122849abb588feb2e682d9ac满足以下条件:对任意实数eqIde5d5b97cd26d400985f74491db835170,总存在eqId6d3103e573784addbe2f5b7c5e5e7daa,使得点eqIda998388216c246409909560e8a4033c4既是点eqId3ff08c190bf2425588374da9a852ef8f的“下位点”,又是点eqIdee46d46184d340f2bccec9fee3e50f54的“上位点”,求正整数eqIdf458db68122849abb588feb2e682d9ac的最小值.
更新:2020/2/16难度:0.4题型:解答题组卷:48
已知eqIde9edd995034840cfb557ea415074294a
(1)求证:eqId3484738c9a62401faa630f6f41d778d6
(2)解关于x的不等式eqIdff9c7fd2347a4447a9fda25b79b3000f.
更新:2020/2/15难度:0.65题型:解答题组卷:0
已知eqId70a27b6ddf6b478285353abb3b1f3741,eqIdaea992e70d4943e49e893817eb885ed7,eqIdad7cefefaba947e1a168bca491c4fca1满足eqId45615ef0900647268b98d1d5eeb28a58,且eqId4b77f42bcdfd4ca98691c90d54073d5e,那么下列选项中不一定成立的是(   )
A.eqIdc10a880a33554b90b0a086e570f148daB.eqIdd797cd6a37c448aba11db2748c02d68cC.eqIda550ad3c46e74edaa6df0b32f12be197D.eqId7112132eb76f4a8dbc88106c55d056bc
更新:2020/2/15难度:0.85题型:单选题组卷:73
如果eqIdc1019b1debc848ed94ad007f4a9d3633,那么下列不等式成立的是(   )
A.eqIdba2e5ba6cb1249f2ad42ba5d138805e5B.eqId6c8dad048e7643a08f1a94ce4c11e0a8C.eqId528107eda9b04afcbebf160e3221ba57D.eqIdb47f0d1ab6f04237b03cfb8bf58b053e
2016·上海高三月考
查看更多[32]
查看更多
更新:2020/2/15难度:0.85题型:单选题组卷:98
关注官方微信