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已知eqId5315721e3dce48929d427ef6cb34c63d,则eqIdbec39cb24a784da28ed0b5d5e52ef04c_______.
更新:2019/6/27难度系数:0.85题型:填空题组卷:0次
eqIdc12aac8c2448479687a40735b3572a23eqId072d7d6b911b42bc89207e72515ebf5feqId2cd9e2fe3d6540df9399dbefe49ada54是正数,且eqId550070a1a602415f9b0965263b16755eeqId8e696baf83cd43389d48e197c565bd1aeqId411a49863ae6408ea3f720c67f376eda,则eqIdf458db68122849abb588feb2e682d9ac的值是
A.3B.4C.5D.6
更新:2019/6/27难度系数:0.4题型:单选题组卷:0次
在矩形eqId5ce7a06ae7a34393b92b5277978ac014中,eqId971a455d4ee2457198acdb4b0a96e70c,以eqIdcc614bd3390c4d028df189b234dcc351eqId8754ce8cf7f34f04abb9a0c041f57f5c为焦点的双曲线经过eqId19a4eb16029e4550a14f2afe4741a3c3eqId0cd8063abf2b458f80091bc51b75a904两点,则此双曲线的离心率为
A.eqIdfef7cd2a9e1042ff850383f8cdd27e81B.eqIdf9230a59a0824020b36b2dbd63252968C.eqId5fb89847a6844beb890a920b7e2361adD.eqIdf10a4863efee4db58a7a31e3ddd2fc57
更新:2019/6/27难度系数:0.85题型:单选题组卷:0次
已知eqId2140b8a68d164867b22ca47ce4209e8f,则eqIdbffb555817c346bbb9b7a1f4ad93776b( )
A.eqId5e30b3f3682042e3bf61665ea4945f08B.eqId2644c4fd7d684e75ae5ed93cb3581244C.2D.eqIdd63f3d22885343d0a95c9f27b038c637
更新:2019/6/27难度系数:0.85题型:单选题组卷:0次
已知eqIdc55f86e1d9ec46928e75d49cc2c37a37eqIdea80dda3dcb34a15b7f91c9bedd3d15d,则eqId170a03e31a0e4656b66452088e998e61
A.eqId4d30518c9fa84df889a81acf0e8dc413B.eqIdda99eb6a95e94f938f61fe19ba38340aC.eqIde14c79a06776495cbd3cd41cd51aa8a0D.eqId70608e4ea879401891a5adb2811d798b
更新:2019/6/27难度系数:0.94题型:单选题组卷:0次
选修4-5:不等式选讲
已知函数eqIdb2b1cdbf56d74b43afae1f8c8c49e303.
(1)求不等式eqId75485f8d4cb743b1a081e94522f5b2c5的解集eqIdcc614bd3390c4d028df189b234dcc351
(2)在(1)的条件下,若eqIdd7a25bbd0eef4928b6ad8bcaf521f79b,求证:eqIda80bdbc2b9be46afafe2e35bc8ca075b.
更新:2019/6/26难度系数:0.65题型:解答题组卷:13次
选修4-4:坐标系与参数方程
在极坐标系中,eqIdaad7b72a25924d078d2360cdc99f1090为极点,点eqIdf34fda17b58046de9229f5bd96df2589,点eqIdac8bb493ad45435783cae748d37b73f5.
(1)以极点为坐标原点,极轴为eqIdc12aac8c2448479687a40735b3572a23轴的正半轴建立平面直角坐标系,求经过eqIdaad7b72a25924d078d2360cdc99f1090eqIdcc614bd3390c4d028df189b234dcc351eqId8754ce8cf7f34f04abb9a0c041f57f5c三点的圆eqId2381423d4cd146cab95f55527681a766的直角坐标方程;
(2)在(1)的条件下,圆eqId517584fed25c413ba8b7bb33ffa2d5c6的极坐标方程为eqId065547096aec4832b16c9a4114632e25,若圆eqId2381423d4cd146cab95f55527681a766与圆eqId517584fed25c413ba8b7bb33ffa2d5c6相切,求实数eqId70a27b6ddf6b478285353abb3b1f3741的值.
更新:2019/6/26难度系数:0.65题型:解答题组卷:14次
已知抛物线eqId19a4eb16029e4550a14f2afe4741a3c3eqId294af0137a7a4b2f873817ba8fbafb44,点eqIdd5b10b2a13f148b78e0d5a1b820538fd为抛物线的焦点,焦点eqIdd5b10b2a13f148b78e0d5a1b820538fd到直线eqIde02b59dd4e974fe28ce02062ab62da98的距离为eqIdcb9b2b8bd99c447bbccaaa8a411aa71b,焦点eqIdd5b10b2a13f148b78e0d5a1b820538fd到抛物线eqId19a4eb16029e4550a14f2afe4741a3c3的准线的距离为eqIdef8988307d4c45ce94db1755a94bb661,且eqId86adb6bcf5b645b79f9d4f0939e851da.
(1)求抛物线eqId19a4eb16029e4550a14f2afe4741a3c3的标准方程;
(2)若在eqIdc12aac8c2448479687a40735b3572a23轴上存在点eqId2381423d4cd146cab95f55527681a766,过点eqId2381423d4cd146cab95f55527681a766的直线eqId417e80f1349244878d01fe90e0891f5f分别与抛物线eqId19a4eb16029e4550a14f2afe4741a3c3相交于eqIdd7be5abad1e34f6db17a56660de8d54feqIdca9308a4ebd84ed8a28d8a519a8dbb39两点,且eqId3b019153ffde40df8e105dda3da41623为定值,求点eqId2381423d4cd146cab95f55527681a766的坐标.
更新:2019/6/26难度系数:0.4题型:解答题组卷:0次
如图,在多面体eqIde716746106b94f1383958fc0e9d1f1a5中,eqId176a0abde5af48dd80344724235fe471,四边形eqId5ce7a06ae7a34393b92b5277978ac014和四边形eqId6f8a491b1fab4e30b2469bd099590893是两个全等的等腰梯形.
figure
(1)求证:四边形eqIdb26cff00c26840b88291f3246cc1669f为矩形;
(2)若平面eqIdad819b6869f44adcae2321faa92686d9平面eqId5ce7a06ae7a34393b92b5277978ac014eqIdb60bb1649c8b41cb935771acc097167eeqId27febc4d3a524ded88276872a8e375f4eqId12bddb17b1e847129564de449e419f71,求多面体eqIde716746106b94f1383958fc0e9d1f1a5的体积.
更新:2019/6/26难度系数:0.65题型:解答题组卷:5次
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