Làm hộ mình bài 2,3 với mấy bạn giỏi toán

Tìm GTLN, GTNN của hàm số y = $\frac{2sin x + cos x}{cos x - 3sinx + 4}$

Làm để viết 1 bài văn về từ tượng thanh ạ??

Tìm GTLN, GTNN của hàm số y = $\sqrt{3}$ cos x - sin x, x ∈ [0; $\frac{\pi}{2}$ ]

Rewrite the sentences 1. Do you know how to use a computer? You know........... 2. I was caught in a traffic jam, so I got to the meeting twenty minutes late. Because of..........

bài 18,19 giúp mk vs nhanh trước 4h30 nha

3.Hoàn thành các câu sau với các từ cho sẵn : friendly Curly shy well – built lazy funny tall handsome long intelligent 1. One of my friends has straight hair , and another has wavy hair . But I have ………. Hair 2. My classmate is very …….. he loves to tell jokes in class 3. His grandfather has a ………….. , grey beard 4. She doesn’t like working . she is …………….. 5. He exercises at the gym three or four dayx every week . he is very ………. 6. I’m not short . I’m Tall 7. My little sister doesn’t like like to meet new people . she is very ………………. 8. My mother is very beautiful and my father is …………… 9. her cousin likes to meet new people and make a lot of friends . he is very …………….. 10. She has a high IQ . she’s very ………………

Cho x, y, z thỏa mãn (1/x+1/y+1/z)/(1/x+y+z)=1. tính giá trị biểu thức B=(x^21+y^21)(y^11+z^11)(z^2017+x^2017)

giúp mình vs viết lại câu vs từ cho sẵn 1. Severe weather conditions have had a serious effect on traffic. AFFECTED 2. She decided to start her own business because she wanted to be independent. VIEW 3. Old people tend to be forgetful. APT 4. He felt that his employers didn't appreciate him. GRANTED 5. Paula spoke clearly so that no one would misunderstand her. AVOID 6. The loss of the account was not our fault. BLAME 7. She said she was worried about the problem of pollution. CONCERN 8. Tom's presence at parties adds to everyone's enjoyment. SOUL

Giusp mk ddi aj tksssssssssssssss