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已知双曲线eqId21b656f72219470ca3adae84008e936c的右焦点为eqIdd5b10b2a13f148b78e0d5a1b820538fd,右顶点为eqId2381423d4cd146cab95f55527681a766eqIdcc614bd3390c4d028df189b234dcc351eqId8754ce8cf7f34f04abb9a0c041f57f5c两点在双曲线eqId19a4eb16029e4550a14f2afe4741a3c3的右支上,eqIdd5b10b2a13f148b78e0d5a1b820538fdeqId99a3187c2b8f4bcc9703c74c3b72f1f3中点,eqId517584fed25c413ba8b7bb33ffa2d5c6eqId8e15963708e9415da25069fea5906e24轴上一点,且eqIdae2662bb4f5e4515b0e52e7127276b77.若eqId44fedf206cc84c60a50c0f9b780a3070,则双曲线eqId19a4eb16029e4550a14f2afe4741a3c3的离心率的取值范围是( )
A.eqId2dbc28f1ee944d9f80138d16f175ae25B.eqIde30513b0757e4010958954d4b8d6e9e5C.eqId931cfc27c23f4d03b5f14970b507b2ffD.eqId529f459f3bf547dc8e90c2f4b851ea79
更新:2019/10/20难度系数:0.4题型:单选题组卷:0次
已知点eqId2efda802d5534f6d92d9f8af7aaec28b为双曲线eqId19a4eb16029e4550a14f2afe4741a3c3的对称中心,过点eqId2efda802d5534f6d92d9f8af7aaec28b的两条直线eqId74c7e0292b094e54ae596d37798a05ed 与eqId439fb93f7745417b8bb1747d963c6e60的夹角为eqIdf1c3337151994ec4b99354c9d54f311c,直线eqId74c7e0292b094e54ae596d37798a05ed与双曲线eqId19a4eb16029e4550a14f2afe4741a3c3相交于点eqId1d86adeca027421ab9a373362056f879,直线eqId439fb93f7745417b8bb1747d963c6e60与双曲线eqId19a4eb16029e4550a14f2afe4741a3c3相交于点eqId5a9e6496ea844136bcdf62faca8b5fa1,若使eqId6f6257dd189544bebce36c8af2152883成立的直线eqId74c7e0292b094e54ae596d37798a05edeqId439fb93f7745417b8bb1747d963c6e60有且只有一对,则双曲线eqId439fb93f7745417b8bb1747d963c6e60离心率的取值范围是( )
A.eqId6f1f7e6fcf3c44d2bd27d5f8afb6dd7cB.eqIda2318ba087164943add4cf3c3a68ddf7C.eqIddbe4ec0c80a04af3bf7fe80dd7d3eef9D.eqId80d424bd9dfb4d0281a3e0d593bf8593
更新:2019/10/19难度系数:0.65题型:单选题组卷:0次
更新:2019/10/19难度系数:0.94题型:填空题组卷:0次
已知eqId2efda802d5534f6d92d9f8af7aaec28b为坐标原点,双曲线eqId3327c113c43b4f7191d1fa2c69c46c60eqIdb17ff237fa78496abf2e4d148ec3e961上有eqIdeb53cb7cb0274f7d8f111c60f824c243两点满足eqIdd0570db84b574827af341a74b237dd49,且点eqId2efda802d5534f6d92d9f8af7aaec28b到直线eqId99a3187c2b8f4bcc9703c74c3b72f1f3的距离为eqIdad7cefefaba947e1a168bca491c4fca1,则双曲线的离心率为( )
A.eqId81652b07662a4ac4a9b60bbbd08fc2f0B.eqIdcd9b24a6a6e5426ab775be20461174e3C.eqId44010c455d484edb87d3c6a96b18d1f9D.eqIda2a0ce3781fa4c26b624f5966b7dee44
更新:2019/10/18难度系数:0.4题型:单选题组卷:0次
双曲线eqId1a4dae01e22d40a7a773045ec22575c4的离心率是_______.
更新:2019/10/16难度系数:0.65题型:填空题组卷:35次
已知eqId0aa72756ed0c4c7a89f26aa94f43e47deqIdde963a24921f4ee7a991bf9d4f43a42e是双曲线的两个焦点,以线段eqId42ca6838695447ed86b53bd3e1c1264b为直径的圆与双曲线的两条渐近线交于eqIdcc614bd3390c4d028df189b234dcc351eqId8754ce8cf7f34f04abb9a0c041f57f5ceqId19a4eb16029e4550a14f2afe4741a3c3eqId0cd8063abf2b458f80091bc51b75a904四个点,若这四个点与eqId0aa72756ed0c4c7a89f26aa94f43e47deqIdde963a24921f4ee7a991bf9d4f43a42e两点恰好是一个正六边形的顶点,则该双曲线的离心率为________.
更新:2019/10/12难度系数:0.65题型:填空题组卷:130次
已知双曲线eqId0f14428848fa4e8cbdaccdcb9711090d的左、右焦点分别为eqId0aa72756ed0c4c7a89f26aa94f43e47deqIdde963a24921f4ee7a991bf9d4f43a42e,点A是双曲线右支上的一点,若直线eqIdc15e066ad1de447fbfd798b8a945f52c与直线eqId96dc7d2790c044d68de0bdfb1690e168平行且eqId3a98210628e9466aa438dd142bdba02c的周长为9a,则双曲线的离心率为______.
更新:2019/10/12难度系数:0.65题型:填空题组卷:144次
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