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首页>高中数学综合库>平面解析几何>圆锥曲线>椭圆>椭圆的离心率>求椭圆的离心率或离心率的取值范围

类题推荐

【推荐1】eqId643f077eff184a5b9bc96f680a2f9983中, eqId9d15d2f0f69546278989bb4c3413a0b4,若一个椭圆经过eqIdeb53cb7cb0274f7d8f111c60f824c243两点,它的一个焦点为点eqId19a4eb16029e4550a14f2afe4741a3c3,另一个焦点在边eqId99a3187c2b8f4bcc9703c74c3b72f1f3上,则这个椭圆的离心率为(   )
A.eqId7c360c67397d43f7ab93ae68548c9afaB.eqId82746e172282441db6dd51f0df0ce6b6
C.eqId4f3c6468b96b42b69860452c387ced32D.eqIddd92246ec27c4dd4b35eb1aa5c017072
更新:2019/01/27难度:0.85题型:单选题组卷:228
【推荐2】椭圆eqIdbdfc75696c8a4bb7a470bc225845e91e1的离心率是(   )
A.eqId23ce5c8e028044faab479ee5c21c2803B.eqId449049f2695f40c98ceea2d52ca646e8C.eqIda186e6699c5f428a8d2d5d62271c49bcD.eqIdb3027a6d3b824ce893ad42c3eb946e66
更新:2020/03/22难度:0.85题型:单选题组卷:22
【推荐3】椭圆eqIdfd8674e21002436f9476310a52d934ec,点eqId0aa72756ed0c4c7a89f26aa94f43e47deqIdde963a24921f4ee7a991bf9d4f43a42e为椭圆eqId19a4eb16029e4550a14f2afe4741a3c3在左、右焦点,在椭圆eqId19a4eb16029e4550a14f2afe4741a3c3上存在点eqIdbedf755e0fdb4d078d6859360706b163,使eqId1b3598518c87436db48c8f15f6aa42f9,则椭圆的离心率范围是(   )
A.eqIddaf40ea74fd844af8661cbf3127c3f53B.eqId764ca830635140548ead47a1716e8204C.eqIdf747bb75f3c84eb289149f1fe64d909aD.eqIdb3dfd1819d054bb38377eb3d99cfdf85
更新:2020/03/03难度:0.85题型:单选题组卷:124