设连续型随机变量X的分布函数为F(x) kx2, 0 x 1 ,1, x 1求: (1)常数 k; (2) PvXv; (3)方差 DX.解:(1)由于连续型随机变量X的分布函数F(x)是连续函数,所以0, x 0lim F(x) lim F(x) 1 即 k=1,故 F(x) x2, 0 x 1x 1 x 11, x 1(2)P(0.3 X 0.7) P(0.3 X 0.7...
Do you play tennis, John? M: Yes, but not very well. Do you play? W: A little. How about a game on Tuesday afternoon? M: Sure. Text 7 【原文】M: Mrs. White, I'm afraid we have to put you on a strict diet. From now on, you're going to have to stay away from salty ...
Find where to play Soccer, Basketball, Footy, Rugby, Cricket, Football, American Football, Badminton, Baseball, Dodgeball, Squash, Tennis, Golf, Ultimate Frisbee anywhere in the world. [iOs] - [Android] - [windows 10] Download the Djamga App for iOs or Android or Microsoft for Health ...
百度试题 结果1 题目where are international tennis championships held?A. London. B. Edinburgh. C. Wembley. D. Wimbledon. 相关知识点: 试题来源: 解析 D 反馈 收藏
-I went to the mountains. -Where did Tina go on vacation? -She went to the mountains. -Did you go with anyone? -Yes, I went with my mother. 2.熟练掌握以下词汇:vacation, mountain, special, anyone 技能目标:复习并掌握动词一般过去式的构成规律; 能用一般过去式叙述假期所做的事。 ...
百度试题 题目where are international tennis championships held? A.London.B.Edinburgh.C.Wembley.D.Wimbledon.相关知识点: 试题来源: 解析 D 反馈 收藏
In the evening I talked to my pen pal on the phone. What did you do? Tim: I had a good time. On Saturday morning I played tennis, in the afternoon I went to the beach, and in the evening I went to Na...
I often play tennis___ my friends___ school.I'm___ London,___ the UK.I play the guitar___ the school band. 相关知识点: 试题来源: 解析 1. make 2. information 3. to know 4. How; How old; What; Where; How; Who 5. full name 6. Miller 7. It's my fault 8. i...
4. by /I / to / school / bike / come (.) ___ 【题目】连词成句 1.often / plays / with / Kitty / table tennis / father / her (.) ___ 2.often / at / weekend / the /I / my / grandparents / visit (.) ___ 3.do / you ...
However, the game does exist in the UK. You just have to look REALLY hard. Harringay Snooker Club, London Harringay Snooker Club, as the name suggests, is primarily a place to play snooker. However, there are other tables in the club including pool, table tennis, and importantly a Carom...