Kết quả tìm kiếm

em cảm ơn ạ! em hiểu r ạ!!

chị có thể giải bài 1 cách chi tiết cho e đc k ạ!!

từ đầu luôn ấy ạ! tại vì dạng toán này em cx chx đc làm nhiều, vs cả cô giáo ms chỉ nói hướng làm thôi, em cx chưa hiểu lắm à!

Mọi người giải chi tiết cho e được k ạ!!

Cho a, b, c là độ dài 3 cạnh của 1 tam giác. Chứng minh rằng: (a+b+c)(\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}) > 6

HE, HF > 0 là s ạ

chị có thể giải chỉ tiết hơn đc k ạ, từ cái chỗ ta có: e chưa hiểu lắm

Cho \Delta ABC cân tại A (\widehat{A}<90^\circ). vẽ BE\bot AC, (E\in AC) và CF\bot AB (F\in AB). Gọi H là giao điểm của BE và CF. Chứng minh a) \Delta ABE=\Delta ACF b) \Delta AEF cân c) AH là đường trung trực của EF d) Trên tia đối của tia EB lấy điểm D sao cho DE=EB. Chứng minh AC+BC>AD+BC...

Những câu văn cuối bài: "Không gian như lắng đọng. Thời gian như ngừng lại. Con gái Huế nội tâm phong phú và âm thầm, kín đáo, sâu thẳm." có ý nghĩa gì?

vậy ý nghĩa của hiệu điện thế là gì vậy ??

- Hiệu điện thế được sinh ra ở đâu? Nêu Ý NGHĨA, ký hiệu, đơn vị đo, dụng cụ đo hiệu điện thế? Số vôn ghi trên dụng cụ điện cho ta biết điều gì? - Nêu nhận xét và viết công thức về hiệu điện thế giữa 2 đầu đoạn mạch và giữa 2 đầu mỗi đèn trong đoạn mạch mắc nối tiếp, mắc song song - Nhận xét và...

Pop art was a(n) (1. convention) _________________ art style in which (2. common) _____________ objects such as comic strips, soup cans and road signs were used as subject matter, and were often incorporated into the work. The pop art movement was largely a British and American cultural...

People intuitively recognize the importance of self-esteem to their psychological health, so it isn't particularly remarkable that most of us try to protect and enhance it in ourselves whenever possible. What is remarkable is that attention to self-esteem has become a(n) (1. commune)...

In January 2001, the (1. govern) ____________ Panel on Climate Change (IPCC) issued its latest report on climate change. Climate models worked out by giant super-computers had become far more reliable since the previous report in 1995 and allowed them to (2. praise) _______________ the earlier...

The standard of television programming produced in this country is in terminal decline. The (1. shed) _____________ has become a meaningless term confined in its (2. apply) ____________ to (3. go) ___________ days when adult content felt the full force of censorship and was not allowed to appear...

There are a myriad of lifestyle issues affecting the youth of today. Such is the pressure heaped on many school-goers to achieve academic excellence by their parents that these (1. real) _____________ expectations are causing children to become hopelessly depressed. Indeed, some, in their (2...

The economic crisis facing many countries today, has created serious (1. employ) _____________ problems. (2. energy) _______________ young people, willing to work, are confronted by many (3. difficult) ________________ when trying to find a job. Filling in countless (4. apply) ____________forms...

My father was a police (1. inspect) ______________ , my mother a (2. teach) ____________. Their (3. decide) ______________ to move to a small town when I was a child changed my life. It was a very (4. peace) _____________ place and of course living there meant that I had much more (5. free)...

Being a (1. journal) _____________, I often have to go on strange assignments. So when my editor told me to do a story on one of the (2. fame) ____________ health spas in Switzerland, I was only too happy to go and take it easy for a week or two. However, when I got there and saw the programme...

You may know that Asian, Middle Eastern and Mediterranean cultures have (1. tradition) ____________ used garlic in their dishes. What you may not know is that garlic was also thought of as a (2. value) ____________ medicine by many ancient civilisations. Today, (3. profession)...