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设函数eqId20d0f3306ebf4741bbc70d42b7cae254
(1)当eqIda08ce385279d41c789695fb651b17890时,求不等式eqId7151d8f911954d818bd61ab08de3e2f9的解集
(2)若函数eqId9e6d98ff2dda4191b448c2c34c9c7532,且eqId6bc336971ecc4a46b18768578c3f4b72有解,求eqId70a27b6ddf6b478285353abb3b1f3741的取值范围.
更新:2019/6/25难度系数:0.65题型:解答题组卷:134次
已知函数eqIddcfb58f016ae4b2a99ca2b72b70112f6为自然对数的底数).
(1)若曲线eqId9b37d03e47a347fc8fab9f814ba5fac4在点eqIdbeed51f79f62495299262b641c125b67(处的切线与曲线eqId1942541e3e0c43ac97fcf12200fe70a2在点eqId091cb22840c14af29b1c966ff5fa6513处的切线互相垂直,求函数eqId376d37b18e8f4a159aa00f64a19abfcf在区间eqIdd4875002eab644559d85b2e36e903b70上的最大值;
(2)设函数eqIde8888013d9a94f3c991059751ddc2d04,试讨论函数eqId97e0bb1d0e0f40f884e25f90ab6598aa零点的个数.
更新:2019/6/25难度系数:0.4题型:解答题组卷:116次
已知抛物线eqIde2f5c3e425e744d4af85d1a7a3441dbbeqId3420d490481b414381dc327de34553f5的焦点分别为eqId5f04473e64c141bcbe9b0a8af27f4aa8,点eqIdd38a1031e32e4c21823c102bdcc419e2eqIdf99528ff77ba49bdbf3c43200fdb726f为坐标原点).
(1)求抛物线eqIdfe33ac7524b14f658e64c52c37499d5c的方程;
(2)过点eqIdaad7b72a25924d078d2360cdc99f1090的直线交eqIdcfc8599bedfb4ab4944abf141f348a9a的下半部分于点eqId2381423d4cd146cab95f55527681a766,交eqIdfe33ac7524b14f658e64c52c37499d5c的左半部分于点eqId517584fed25c413ba8b7bb33ffa2d5c6,求eqId1af6aa716c28415f8ecaef5d89fc0488面积的最小值.
更新:2019/6/25难度系数:0.4题型:解答题组卷:126次
如图,在直角梯形eqId5ce7a06ae7a34393b92b5277978ac014中,eqId399fbff4eb6141dbb8c4633c214332d5,平面eqId5ce7a06ae7a34393b92b5277978ac014外一点eqIdd7be5abad1e34f6db17a56660de8d54f在平eqId5ce7a06ae7a34393b92b5277978ac014内的射影eqIdca9308a4ebd84ed8a28d8a519a8dbb39恰在边eqIdbf4db7d066034b139ff80a09ab139d45的中点eqIdca9308a4ebd84ed8a28d8a519a8dbb39上,eqId32a9d436cb994350b36b1f39a907aa99
figure
(1)求证:平面eqIdc5b4eda3ad7d4ceb989f32bc18119eab平面eqId02dc5b9712104a18adc92a366a8c2455
(2)若eqId2381423d4cd146cab95f55527681a766在线段eqIda4133d812272499891a1f8813d5747f8上,且eqIda0b826143be84f39822399489e12ec84平面eqId9ad44ec4ca8541de98d065a2805fc33f,求点eqId2381423d4cd146cab95f55527681a766到平面eqIdfcd3aba6b7804fb68706ce7697ffa7a3的距离.
更新:2019/6/25难度系数:0.65题型:解答题组卷:283次
春夏季节是流感多发期,某地医院近30天每天入院治疗的人数依次构成数列eqId93e38ecd74a24cb59da79181b95bfd3a,已知eqId255b5fb1b9134f66a2f6a92d9ec4351b,且满足eqId494315fb36ee4922a0b5ecf5e91b9811,则该医院30天入院治疗流感的人数共有______人.
更新:2019/6/25难度系数:0.65题型:填空题组卷:118次
已知函数eqId9302e71fe85d43fcaf189e7c2a52e423,点eqIdeb53cb7cb0274f7d8f111c60f824c243是函数eqId4837c94ef0ff4dcf9b1dda4df363275a图象上不同的两点,则eqId9cefb5c048f0427dae9d5a3e45563a13为坐标原点)的取值范围是(  )
A.eqId238b578de54241c58597b2ad1a8385b0B.eqId9e1572695f0249bba13f177b7d635bc1
C.eqId7119ca4f14254f2d84cfcfd9da54a4c3D.eqId502663ca6e8a4118924e5089fd233339
更新:2019/6/25难度系数:0.65题型:单选题组卷:145次
已知eqIdd5b10b2a13f148b78e0d5a1b820538fd是双曲线eqId66c921ebd01e41168475092f2ebdad4e的右焦点,eqIdd7be5abad1e34f6db17a56660de8d54feqId19a4eb16029e4550a14f2afe4741a3c3左支上一点,eqIda3d67519f3d04e0ab9e738d3c2e5919e),当eqId87a4c4bf19364ca99fd7b3697704cdf8周长最小时,则点eqIdd7be5abad1e34f6db17a56660de8d54f的纵坐标为(  )
A.eqIda25a1856cc35471f801d7339e8eefd60B.eqIdaf50318e7af241da9d988d67412e3e89C.eqId3f069b5625e34fb6a57f41623dc61dbfD.eqId45d6404a9c6b43c5beeff1f9bb0af8a0
更新:2019/6/25难度系数:0.65题型:单选题组卷:107次
甲、乙两人各写一张贺年卡随意送给丙、丁两人中的一人,则甲、乙将贺年卡都送给丁的概率为(  )
A.eqIdb3027a6d3b824ce893ad42c3eb946e66B.eqIda186e6699c5f428a8d2d5d62271c49bcC.eqId4a597fcb14d7483bb5a24d7cb6aaaa5cD.eqId544b08695e574da999f15159f5bf806a
更新:2019/6/25难度系数:0.65题型:单选题组卷:284次
函数eqId49a2841c9e6f4542a4e016786141d84b的大致图象是(  )
A.figureB.figure
C.figureD.figure
更新:2019/6/25难度系数:0.65题型:单选题组卷:362次
在正方体eqId588284d93dc5489295f8f224f8e30d13中, eqIdce3304c847ca47f486f045a4fbfc0ecdeqId1b51efe7c2fa42748ac5a6be262e2fa4所成的角为(  )
A.eqId52f6eacad70542819765e64761fa959aB.eqId71cafb2f1aab47ae9d2421c9fdce7f2dC.eqId55b020b87a104bc1b895f1a62cb112a8D.eqId20e327eeff5243f18346bde98eb219c3
更新:2019/6/25难度系数:0.65题型:单选题组卷:211次
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