【单选题】已知双曲线的实轴长是虚轴长的2倍,则双曲线的离心率为( )
【单选题】设 , 分别为双曲线 的左,右焦点.若在双曲线右支上存在一点 ,满足 ,且 到直线 的距离等于双曲线的实轴长,则该双曲线的离心率为( )
【单选题】The boy who offered me his seat is called Tom.
D.
compound-complex sentence
【简答题】The boy who offered me his seat is called Tom.
【单选题】设 、 分别为双曲线 的左、右焦点.若在双曲线右支上存在点 ,满足 ,且 到直线 的距离等于双曲线的实轴长,则该双曲线的离心率为( )
【单选题】双曲线 的实轴长是虚轴长的 倍,则 ( )
【单选题】His classmates offered him their congratulations ______ his successful performance.
【单选题】The boy who offered me his seat is called Tom.