Trong văn bản Sự giàu đẹp của tiếng việt tác giả Đặng Thai Mai đã nhận định : Tiếng Việt có đặc sắc của một thứ tiếng đẹp, một thứ tiếng hay. Qua văn thơ đã học và đọc thêm em hãy làm sáng tỏ nhận định trên

Tìm x biết \(x-3\sqrt{x}=0\)

Đọc đoạn văn và trả lời

Will people still read books 100 years from now? A few years ago, many people would have said no. It seemed likely that computers and the Internet would replace books. Now, however, most experts think that books are here to stay.

There are a number of reasons why computers will not replace books entirely. One reason is that books on paper are much cheaper than computers. And books do not need a power source. You can read a book for as long as you want and wherever you want. You never have to worry about losing power. Also, many people feel more comfortable reading woeds in a book than reading woeds on a computer screen because it is less tiring to the eyes.

Will books in the future be exactly the same as the books you can buy today? The answer to that question is no. In the future, you may only need to buy one book. With this one book, you will be able to read novels, plays, and newspapers. It will look like today's books, but it will be electronic.

One of the people working on the book of the future is Professor joseph Jacobson from Massachusetts Institute of Technology. Professor Jacobson's electronic book will have a small button on the side. When you oress the button, woeds will instantlu appear on the page. When you want to read a different story, you can push the button again and a new story will quickly appear.

1. The phrase are here to stay in the first paragraph mostly means .......

2. Which of the following is true according to the passage ?

3. What will the book of the future look like?

4.The button on the side of the electronic book is used....

5.What is the main topic of the passage?

Tìm và chữa lỗi sai

I am looking for my keys, but i haven't found it

Cho a,b,c,d \(\in R\) thỏa mãn:

a¹⁰⁰+b¹⁰⁰=a¹⁰¹+b¹⁰¹=a¹⁰²+b¹⁰²

Tính giá trị S = a²⁰¹⁸+b²⁰¹⁹

Cho hàm số y=f(x) xác định với mọi x>1

Biết f(n)= (n-1).f(n-1) và f(1)=1

Tính f(4)

CHo f(x) + 2f(\(\frac{1}{x}\)) =1

Tính f(2)

Cho hàm số f(x+1)= 2x-3

Tìm f(x)

Chứng minh rằng nếu giá trị của biểu thức f(x)=ax^2+bx+c chia hết cho 2011 với mọi x thuộc Z(a,b,c,d thuộc Z) thì các hệ số a,b,c đều chia hết cho 2011