Viết vào chỗ chấm:

Cho đường thẳng d chứa hai điểm A, B và cắt một mặt phẳng (P) tại M như sau:

Biết rằng A’, B’ là hình chiếu của A, B trên (P) và M A ' = 3 , A ' B ' = 1  

A.  d A , P d B , P = 2 3

B.  d A , P d B , P = 1 3

C.  d B , P d A , P = 3 4

D.  d B , P d A , P = 4 3

Cho hàm f liên tục trên R  và hình dưới đây là đồ thị của hàm y = f ' x

Tìm các khoảng đồng biến của hàm f

A.  − ∞ ; 0 ; 3 ; + ∞

B.  − ∞ ; − 1 ; 3 ; + ∞

C.  − 1 ; 1 ; 3 ; + ∞

D.  − 1 ; 0 ; 1 ; 3

Cho hàm số y = x 4 − 8 x 2 − 4 . Các khoảng đồng biến của hàm số là

A. − ∞ ; − 2   v à   0 ; 2

B. − ∞ ; − 2   v à   2 ; + ∞

C. − 2 ; 0   v à   2 ; + ∞

D. − 2 ; 0   v à   0 ; 2

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

In the 1960s, The Beatles were probably the most famous pop group in the whole world. Since then, there have been a great many groups that have achieved enormous fame, so it is perhaps difficult now to imagine how sensational The Beatles were at that time. They were four boys from the north of England and none of them had any training in music. They started by performing and recording songs by black Americans and they had some success with these songs. Then they started writing their own songs and that was when they became really popular. The Beatles changed pop music. They were the first pop group to achieve great success from songs they had written themselves. After that it became common for groups and singers to write their own songs. The Beatles did not have a long career. Their first hit record was in 1963 and they split up in 1970. They stopped doing live performances in 1966 because it had become too dangerous for them - their fans were so excited that they surrounded them and tried to take their clothes as souvenirs! However, today some of their songs remain as famous as they were when they first came out. Throughout the world, many people can sing part of a Beatles song if you ask them.

The first songs of the Beatles were __________.

A. written by black American

B. broadcast on the radio

C. paid a lot of money

D. written by themselves

Viết vào chỗ chấm:

Bạn Minh đặt tấm bìa hình tròn nằm trong

tấm bìa hình vuông ( như hình vẽ). 

Biết diện tích hình vuông là 4cm².

Diện tích phần hình vuông không bị hình tròn che lấp là: …………………….

Điền dấu >,<,= thích hợp vào vào chỗ chấm

58,90 … 58,9

83,2 … 83,19

7,843 …  7,85

80,6 … 79,6

Trong các số phức thỏa mãn điều kiện z − 2 − 4 i = z − 2 i . Số phức z có môđun nhỏ nhất là

A. z = 2 - 2i

B. z = -1 + 5i

C. z = 2 + 2i

D. z = 1 + 2i