a\(\int_0^1\dfrac{dx}{x^4+4x^2+3}\)

b \(\int\dfrac{x^2-1}{x^4+1}\)

c\(\int\dfrac{dx}{x\left(x^3+1\right)}\)

d \(\int_0^1\dfrac{xdx}{x^4+x^2+1}\)

y = 2x² - 3(m+1)² +6mx + m³ có 2 điểm cực trị A,B sao cho tam giác ABC vuông tai C với C ( 4,0 )

Choose the correct word for each blank in the following passage.

Spring is a time when there are many festivals in our country. Among them, Hoa Ban Festival is the most beautiful and interesting and it takes place in Lai Chau. It is typical of the (1)………life of the Thai people. In the second lunar month of the year, when it (2) ……..warmer and hoa ban - a kind of beautiful flower in the northwest mountainous area - blossoms, Hoa Ban Festival is (3)………... This is a great time for everyone, (4) …………… for boys and girls. The boy (4)………… the most beautiful flower and gives it to his girlfriend. This is not only a time for love but also for the Thai people to (5)………..for good crops, for happiness, and express their special thanks to the Gods and ancestors. The festival is always full of songs and prayers.

Question 4:

A. largely

B. especially

C. generally

D. typically

Hấp thụ hoàn toàn 3,36 lít khí  C O 2  ở đktc vào 100 ml dung dịch  C a ( O H ) 2  1M thu được m gam kết tủa. Giá trị của m là

A. 10. 

B. 15

C. 7,5.  

D. 5

Bài thơ “Bánh trôi nước” có những điểm nào giống với những câu hát than thân trong các bài ca dao?

Find the word which has a different sound in the part underlined. Read the words aloud.

A. solar

B. violation

C. temperature

D. generator

Write the correct forms of the verbs in brackets

Peter (have) ______________ curly hair.