\(\lim _{x \rightarrow 1} \frac{\sqrt{x+8}-3}{x-2}\) bằng
Câu hỏi liên quan
chọn đúng hoặc sai với mỗi ý a), b), c), d)
Một bình dưỡng khí dùng cho thợ lặn có thể tích chứa không khí \({V_1} = 3,0l,\) khí trong bình được nén đến \({p_1} = 15,0{\rm{MPa}}.\) Bình được nối thông khí với một bình khác đang có không khí cùng nhiệt độ, ở áp suất \({p_0} = 0,10{\rm{MPa}}\) và thể tích \({V_0} = 39,0l.\) Xét đến khi áp suất hai bình bằng nhau và bằng p, nhiệt độ của khí ở hai bình bằng với nhiệt độ khi chưa nối. Bỏ qua thể tích của phần ống nối hai bình.
Read the following passage about lifelong learning and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
My father was an enthusiastic traveller, but as he got older, he increasingly suffered from what he called “travel fever,” a vivid term for the acute anxiety felt before a journey, essentially due to uncertainty about all the things that could go wrong. Sadly, this eventually stopped him from going on holiday. Then I, too, started to suffer similar apprehension, so I consulted a psychotherapist. She recommended a small piece of cognitive behavioural therapy, which involved acknowledging the mental and physical symptoms of anxiety, but telling myself that these were essentially indistinguishable from feelings of excitement about the prospect of a journey. This reframing of my feelings has been reasonably effective – it’s one way of dealing with uncertainty.
It’s not just the uncertainty of travel that we all have to face. None of us knows what is going to happen, or what is currently going on outside our immediate knowledge, or the vast majority of what has happened in the past. Uncertainty has been called the “conscious awareness of ignorance,” and there is a lot we are ignorant about. We must navigate through life without complete information, and this fundamental uncertainty is an inescapable aspect of human existence.
We all have to live with this uncertainty and, as a statistician, it’s been my job to try to analyse data and assess some of the risks we face. (I)But some deal with uncertainty with more equanimity than others. (II) Psychological studies, as well as our own experience, reveal a wide variation in people’s responses, including those that are cognitive (how we think), emotional (how we feel), and behavioural (what we do). (III)For example, when faced with uncertainty, do you deny it or acknowledge it, does it put the wind up you or make you courageous, do you try to avoid it or approach it?(IV)
Of course, your response may depend on the context, just as an individual’s appetite for risk-taking can vary across different areas of their lives. I have known people who seemed to take huge physical risks, yet were very cautious with money. Numerous scales have been developed to measure how well people can deal with uncertainty, based on responses to statements ranging from “Unforeseen events upset me greatly” to “When it’s time to act, uncertainty paralyses me.” Those who score highly, and find it difficult to tolerate uncertainty, may also be at increased risk of clinically significant anxiety and depression.
Which of the following best summarizes the main point of the passage?
Tính chất nào sau đây không phải tính chất vật lí chung của kim loại?
Có mấy chế độ bảo dưỡng ô tô?
Tín dụng ngân hàng là việc ngân hàng chấp nhận để khách hàng sử dụng 1 lượng tiền vốn trong 1 thời gian nhất định trên cơ sở lòng tin khách hàng có khả năng gì?
Ngân sách nhà nước có các đặc điểm chủ yếu nào?
You are attending a friend’s birthday party where many of his friends are playing a lively game with balloons. You are quite shy and don’t know those friends However, you want to be part of the game. What can you say to play the game?
Từ thế kỉ X đến thế kỉ XV, hệ tư tưởng nào được tiếp nhận và nâng cao thành hệ tư tưởng thống trị trong xã hội phong kiến Việt Nam?
Trong Vật lí, phương trình tổng quát của một vật dao động điều hoà cho bởi công thức \(x\left( t \right)=A\text{cos}\left( \omega t+\varphi \right)\), trong đó \(t\) là thời điểm (tính bằng giây), \(x\left( t \right)\) là li độ của vật tại thời điểm \(t,A\) là biên độ dao động \(\left( A>0 \right)\) và \(\varphi \in \left[ -\pi ;\pi \right]\) là pha ban đầu của dao động. Xét hai dao động điều hoà có phương trình:
\({{x}_{1}}\left( t \right)=3\cdot \text{cos}\left( \frac{\pi }{6}t+\frac{\pi }{6} \right)\) (cm) và \({{x}_{2}}\left( t \right)=3\cdot \text{cos}\left( \frac{\pi }{6}t+\frac{\pi }{4} \right)\) (cm).
Từ dao động tổng hợp \(x\left( t \right)={{x}_{1}}\left( t \right)+{{x}_{2}}\left( t \right)\), sử dụng công thức biến đổi tổng thành tích ta tìm được pha ban đầu của dao động tổng hợp này bằng \(\frac{m\pi }{n}\) với \(\frac{m}{n}\) là phân số tối giản có mẫu dương. Tính \(n-m\).
Read a flyer promoting a new gym. Decide if the statements are true (T) or false (F).
About us
You don't want just a gym membership. You want a membership that means something. And that means you need support, expert help and a community.
Best Body Fitness isn't just a gym: it's a full-service fitness membership made for you.
Here's how it works:
STEP ONE: Your assessment
We begin with an assessment session. This is a chance for you to see what we do at Best Body. Our assessment plans are no-cost and no-risk. We'll also make a training plan specifically for you.
STEP TWO: Your training
When you decide to become a Best Body member, we show you what to do, how to do it and why you are doing it. After a few sessions with an expert private trainer you will feel comfortable working out on your own. But don't worry, we'll always be nearby if you have questions.
STEP THREE: Your membership
Membership works on a month-to-month basis. There are no sign-up fees and no cancellation fees. Start and stop whenever you want. And the best part? Our fees are the most competitive in the whole downtown area.
STEP FOUR: Your community
At Best Body Fitness, we see everyone as part of a big team. And when you work with a team, you can do great things. Join any of our specialized classes, led by expert instructors. Come to our nutrition classes. Participate in our regular social events. Everything is included in your fee.
If you stop your membership, you don't have to pay anything.
Ở Trung Quốc, vương triều nào được thành lập đầu tiên trong thời cổ đại?
kWh (ki-lô-oát-giờ) là đơn vị của
Phương pháp chấm điểm dùng để thể hiện các hiện tượng gì?
Ngành công nghiệp nào sau đây của Trung Quốc đứng đầu thế giới?
Phương án nào sau đây nêu đúng số lượng kí tự bảng mã ASCII hiện nay có thể mã hóa?
Read the following passage about women in the workplace 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.
Marcel Bich, a French manufacturer of traditional ink pens, was the man (18) ______. Bich was surprised by the poor quality and high price of the ballpoint pens available at the time. However, he realised that the ballpoint pen was a well-established invention, (19) ______ that would succeed in the market.
"Bich approached the Biro brothers and asked for permission to use their original invention in one of his pens. In return, he offered to pay them for each pen he sold. (20) ______, he used a microscope to examine them closely."
By 1950, he was ready to introduce his new design: a plastic pen with a transparent barrel that wrote smoothly, didn’t leak, and cost only a few cents. The new ballpoint pen (21) ______. The public liked it immediately, and today it is as common as the pencil.
Bich's success allowed him to establish Société Bic, which expanded worldwide. (22) ______, producing not only pens but also lighters, razors, and even mobile phones.
Nguyên nhân chủ yếu gây ra điện trở của kim loại là gì?
Thiết bị nào dưới đây có thể làm thiết bị đầu ra?
Dung dịch nào sau đây được sử dụng để xác định sự có mặt của protein trong tế bào?
Thông tin khi đưa vào máy tính, chúng đều được biến đổi thành dạng chung nào?
