`|x-3,5| +|4,5-y|=0``<=>`$\left \{ {{4,5-y=0} \atop {x-3,5=0}} \right.$
⇔$\left \{ {{y=4,5} \atop {x=3,5}} \right.$
Vậy $x=3,5 ;y=4,5$
$\\$
`|x-3,5|+ |4,5 - y|=0`
Với mọi `x,y` có : `|x-3,5| ≥ 0, |4,5 - y| ≥ 0`
`-> |x-3,5| + |4,5- y| ≥0∀x,y`
Dấu "`=`" xảy ra khi :
`↔|x-3,5|=0, |4,5 - y|=0`
`↔x-7/2=0, 9/2 -y=0`
`↔x=0+7/2, y=9/2-0`
`↔x=7/2,y=9/2`
Vậy `(x;y)=(7/2; 9/2)`
Change the following sentences into passive voice. 1. Somebody was taking my briefcase. My.............................................. ............................ 2. The teacher is returning our written work . Our written work........................... .............. 3. She is giving her report now Her report................................. .................. 4. The mad dog was looking at the little boy. The little boy.................................. ...................... 5. The police are arresting five suspects. Five suspects......................... .................................. 6. The doctor was ordering him to take a long rest. He...................................... ................................
20đ mn ơi giúp em với ạ huhu Đề là: Rewrite the following sentences using a wish construction cứuuuuuuu
phân biệt dwellers, occupants , tenants, residents
giúp mình nhé 15p nữa nộp bài | thanks mọi người nhớ tìm ước chung nữa thanks
Question 1-10: Choose the best word or phrase that best complete each sentence below 1. His…………..always makes people laugh. a. quiet b. sense of humor c. Christmas presents d. smiles 2. The way of life in this country is…………….to that in my country. a. similar b. the same c. like d. as 3. You have to make ………………..children do not play with matches. a. ensure b. surely c. sure d. ensuring 4. The prince immediately……………….the girl. a. fall in love with b. fell in love with c. fall into love at d. fell into love at 5. Different language………………learn words in different ways. a. learners b. learner c. people d. person 6. My little brother……………..pictures very much. a. enjoy to draw b. enjoy drawing c. enjoys to draw d. enjoys drawing 7. Some people in the neighborhood are not happy…………………the changes a. with b. about c. at d. of 8. TV………………...information and entertainment. a. brings b. takes c. gives d. makes 9. His feet hurt so he has to walk to school……………………. a. on crutch b. on crutches c. on foot d. on feet 10. ……………….natural resources? Is it difficult? a. what about to save b. what about saving c. how about save d. how about to save
Trong 0.5s cuối cùng trước khi chạm vào mặt đất , vật rơi tự do vạch được quãng đường gấp đôi quãng đường vạch được trong 0.5s trước đó . Lấy g=10m/s^2 . Tính độ cao vật
Vẽ đậu mầm. Bạn ship ai trong Hoidap ;)
giúp mik vs.hứa vote 5 sao cho bạn nào nhanh nhất
Vẽ anime NL: Ai chat trên Pin hem
Nêu nội dung của bài : Đoàn thuyền đánh cá -Dài dài 1 chuts nha:>
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến
