皮皮学，免费搜题
登录
搜题
【简答题】
已知双曲线 的两个焦点为 、 点 在双曲线C上． (1)求双曲线C的方程； (2)记O为坐标原点，过点Q (0,2)的直线l与双曲线C相交于不同的两点E、F，若△OEF的面积为 求直线l的方程．
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】The new start-up company _________ a large chunk of the market within a year. carved out carved into carved up carved out of
【单选题】The heads of which Presidents are carved into Mount Rushmore?
A.
Washington, Madison, Theodore Roosevelt, Kennedy
B.
Washington, Lincoln, Nixon, Reagan
C.
Adams, Taft, Eisenhower, Carter
D.
Washington, Jefferson, Theodore Roosevelt, Lincoln
【简答题】You are asked to do it after school.
【简答题】You are a clerk in a certain multinational corporation. You are asked to write a report about the target nation's economic situation, you received the information as follows: Read the following table ...
【单选题】—Excuse me, is this your backpack? —_____ [ ]
A.
Sorry, I don't know
B.
Yes, it is. Thank you
C.
Your backpack is in my room
D.
It's black
【单选题】The presidential monuments were carved in an order corresponding to ______ .
A.
their importance in the history of the country
B.
the time of their presidency
C.
the length of time they were in office
D.
the number of votes they received to be elected
【单选题】Your sister is said ________ in the supermarket when she was doing shopping yesterday. [ ]
A.
to be badly treated
B.
treating badly
C.
being badly treated
D.
to have been badly treated
相关题目：