Cho hàm số \(y = {\cot ^2}\frac{x}{4}\). Khi đó nghiệm của phương trình y'=0 là

Một lò xo có độ dài tự nhiên 25cm, khi bị nén lò xo dài 16cm và lực đàn hồi của nó bằng 9N. Hỏi khi lực đàn hồi của lò xo bị nén bằng 18N thì chiều dài của lò xo bằng

Phong trào Tây Sơn nổ ra vào năm nào?

Nếu không được điều trị kịp thời, lợn mắc bệnh phân trắng lợn con sẽ chết sau bao nhiêu ngày?

Nêu tên các khối khí chính trên Trái Đất?

Read the following passage about humanoid robots and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

The average life expectancy in Vietnam is approximately 71 years for men and 76.4 years for women. This gender disparity is often attributed to differences in lifestyle and health-related behaviors. Women generally exhibit healthier habits, such as consuming less alcohol, smoking less frequently, maintaining a balanced diet, and paying greater attention to their physical well-being.  However, life expectancy is shaped by a variety of additional factors  . For instance, individuals residing in economically disadvantaged regions often face limited access to healthcare services, nutritious food, and opportunities for rest or physical activity , which can significantly reduce their lifespan. Educational attainment also plays a crucial role. Research indicates that individuals with higher education levels tend to live, on average, three years longer than those without a university degree. This is likely due to improved socio-economic conditions associated with higher education, such as better employment prospects and access to resources that promote health. Furthermore, benefiting from advances in medicine and medical technology people can lead a healthier and safer life, which results in enhanced life expectancy. Ultimately, lifestyle choices are critical determinants of longevity. It is crucial for individuals to adopt healthy habits, such as maintaining a nutritious diet that provides essential nutrients, and avoiding harmful behaviors like smoking, which brings about a wide range of both physical and mental changes in people’s health, leading to a longer expectancy.

Bác sĩ thú y nằm trong nhóm ngành nào?

Polysaccharide có chức năng cấu trúc nhờ đặc điểm nào dưới đây?

Thông tin của thị trường có vai trò quan trọng như thế nào đối với người bán?

Cho góc \(\alpha ,\,\left( {{0}^{\circ }}<\alpha <{{180}^{\circ }} \right)\) thỏa mãn \(\text{tan}\alpha =3\).

Mark the letter A, B, C, or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17

a. Is 6:00 PM OK?

b. OK, I like that place.

c. The Italian restaurant on 5th street.

d. Yes, that’s good. Where would you like to go?

e. Jennifer, would you like to have dinner with me?

f. I think that’s too late.

g. How about tomorrow night? Is 9:00 PM all right?

h. Yes. That would be nice. When do you want to go?

Read the following passage about urban shift and mark the letter A, B, C, D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

[I] Sperm whales are fascinating creatures. [II] They possess the biggest brain of any species, six times larger than a human’s, which scientists believe may have evolved to support intelligent, rational behavior. [III] They’re also highly social and capable of making decisions as a group. [IV] But there’s also a lot we don’t know about them, including what they may be saying to one another when communicating with a system of short clicks, known as codas.

Now, new research published in Nature Communications today suggests that sperm whales’ communication is actually much more expressive and complicated than was previously thought. A team of researchers led by Pratyusha Sharma at MIT’s Computer Science and Artificial Intelligence Lab (CSAIL) working with Project CETI, a nonprofit focused on using AI to understand whales, used statistical models to analyze whale codas and managed to identify a structure to their language that’s similar to features of human language. Their findings represent a tool future researchers could use to decipher not just the structure but the actual meaning of whale sounds.

For the study, the researchers examined recordings of 8,719 codas from around 60 whales collected by the Dominica Sperm Whale Project between 2005 and 2018, using a mix of AI algorithms for pattern recognition and classification. The AI then turned the clicks within the coda data into a new kind of data visualization called an exchange plot, revealing that some codas featured extra clicks. These extra clicks, combined with variations in the duration of their calls, appeared in interactions between multiple whales, which they say suggests that codas can carry more information and possess a more complicated internal structure than we had previously believed.

The team’s next step is to build language models of whale calls and to examine how those calls relate to different behaviors. They also plan to work on a more universal system that could be used across species, says Sharma. Taking a communication system we know nothing about, working out how it encodes and transmits information, and slowly beginning to understand what’s being communicated could have many purposes beyond whales. “I think we’re just starting to understand some of these things,” she says. “We’re very much at the beginning, but we are slowly making our way through.”

Which of the following best paraphrases the underlined sentence in paragraph 4?

Cho tập hợp $A=\left(-\infty ;-1 \right]$ và tập $B=\left(-2;+\infty \right)$. Khi đó $A\cup B$ là

Liên kết hóa học được hình thành trong phân tử nước là

Hãy cho biết: Mô hình phân tán nào là phổ biến nhất trong tự nhiên?

Sắp xếp các từ, cụm từ sau để được câu đúng.

Nghe tin/ con trai/ mẹ vội vã/ bỏ hết công việc/ bị tai nạn,/ đang ở trong viện/ chạy vào thăm.

Each of the following sentences has one error (A, B, C, or D). Find it and blacken your choice on your answer sheet.

If a student takes a course on Computer Science, it will take them four years to do it.

Cơ cấu trục khuỷu thanh truyền có mấy nhóm?

Hô hấp sáng xảy ra với sự tham gia của những bào quan nào?

(1) Lizôxôm.

(2) Ribôxôm.

(3) Lục lạp

(4) Perôxixôm.

(5) Ti thể.

(6) Bộ máy Gôngi.

Phương án trả lời đúng là:

Cho hình chóp \(S.ABCD\) có đáy \(ABCD\) là hình bình hành.