Lập bảng biến thiên: a) y = 2 - x(x - 4) trên khoảng (2;+∞) b) y = 2x + 3 trên R c) y = x² + 10x + 9 trên (-5;+∞)

giúp mình biến đổi đoạn này với

Giúp mình câu D với mình cảm ơn

Mng ơi , e cần gấp . 15h35' có giúp e đc ko ạ ??

giúp mk vs ạ!mk đang cần gấp ạ.

Tìm gía trị của x để $\sqrt{-3x }$ có nghĩa nhớ giải thích

chào buổi chiều. Ai ngủ dậy chưa nhỉ. Dậy rồi thì vẽ hộ tui 1 con mầm bằng app nl: ai dậy rồi thì chat vs tui

12. They have shared their feelings with us since 2012 Their........................................................................................................................ 13. He has not improved his math ability for a fortnight. His math............................................................................................................................. 14. Noone has used this road for ages. This...................................................................................................................... 15. I have just seen an interesting film. An ....................................................................................................................... 16.This is the first time she has met him. He ………………………………………………… 17. Ba has never read a boring book befor A boring……………………………………………. 18. They have never drawn Ha Long before. Ha....................

Trình bày đoạn văn tổng-phân-hợp nội dung là về lao động hoặc học tập

Music influences people in different ways or the same person differently at different times . Music may seem to influence people differently . That is because people can react differently to the music . We are able to apply a choosing process to the music we hear . If someone hates jazz , then a jazz piece with a positive effect will probably not make him feel good . A happy song might appear to make an angry person angrier , yet it is not the music itself that is creating the anger ; rather it is the positive effect of the music . The angry person does not want to accept the song's happy feeling: it points out his already existing anger, and makes that anger come to the surface. When a piece of music is played and we are listening to it, our body, mind, and feelings are being affected. The musicians of ancient cultures such as China, India, Turkey and Greece understood the effects of music. In fact, Pathagoras, in ancient Greece, introduced a whole science that concerned them. Because the musicians of these ancient cultures understood these effects, they created music that was positive, uplifting, and beneficial. Once the effects of music are better understood, the next step is to gain a better understanding of the music around us, and what effect it is actually having.