Cho x,y,a,b là các số thực thỏa mãn `x^4/a + y^4/b= (x^2+y^2)/(a+b)` và `x^+y^2=1` Chứng minh: `x^2006/a^1003 + y^2006/b^1003 = 2/(a+b)^1003`

cảm nhận bài bếp lửa của Bằng Việt lớp 9

Giải chi tiết giúp mk Ghi rõ cách tách ra Ko chi tiết=bc

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Một câu cơ bản lượng giác lớp 10 ạ😥 mong mn giúp mik, mik sẽ vote đủ nha

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- Giant pandas (often referred to as simply “pandas”) are black and white bears. In the wild, they are found in thick bamboo forests, high up in the mountains of central China. - These magnificent mammals are omnivores. But while pandas will occasionally eat small animals and fish, bamboo accounts, bamboo accounts for 99 percent of their diet. - Pandas are BIG eaters- everyday they fill their tummies for up to 12 hours, shifting up to 12 kilograms of bamboo - Giant pandas grow to between 1.2m and 1.5m, and weigh between 75kg and 135kg. Scientists aren’t sure how long pandas live in the wild, but in captivity they live to be around 30 years old. - Baby pandas are born pink and measure about 15 cm- that is about the size of a pencil! They are also born blind and open their eyes six to eight weeks after birth - Family time! Female pandas give birth to one or two cubs every two years. Cubs stay with their mother for 18 months before venturing off on their own. - Unlike most other bears, panda do not hibernate. When winter approaches, they head lower down their mountain homes to warmer temperature, where they continue to chomp away on bamboo - Sadly, these beautiful bears are endangered, and it is estimated that only around 1,000 remain in the wild. That is why we need to do all we can protect them 17. Where can pandas be found in the wild? A. in central China B. around the world C. in bamboo forests D. in the mountains 18. What does the word “omnivore” mean? A. Animals that eat only meat B. Animals that eat only plant C. Animals that eat both plants and meat D. Animals that eat nothing but bamboo 19. How long can pandas live in the wild? A. About 30 years B. About 18 months C. About 12 hours D. We do not know 20. According to the passage, which of the following is NOT true? A. Like most other bears, pandas also hibernate B. Pandas are endangered species C. Baby pandas are born blind D. Bamboo is a panda’s favourite food

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