# Math in School

### 0.999…. is equal to 1 or not?

0.9999……=1? This question shows up every year. It’s a 0.9999……=1 anniversary, right? Today MathPots also want to try to cook this stuff to everyone.

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### [calculus]The example of ε-δ definition problem

In the last meal [calculus]The clarification of ε-δ definition, we knew the actual meaning of $latex \varepsilon -\delta$ definition. This time we are going to use it. In this dish, I will show you the basic problem in $latex \varepsilon -\delta$ definition. Hope to make you understand clearly!

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### What is Thales’ theorem? The little relationship between circle and right triangle.

Maybe some people would say that “who is Thales? I have only heard about Taylor Swift.” But you must have heard the theorem which I will talk about later.  Who is Thales? Thales was born in 624 B.C. He is a Greek philosopher, mathematician and was also one of the Seven Sages of Greece.He was known as “the father of philosophy” or “the father of mathematics” nowadays. What is Thales’ theorem talking about? In short, The triangle formed by the diameter

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### [calculus]The clarification of ε-δ definition

I believe that you learned the simple concepts of limit, integral and differential when you met calculus for the first time. However, when we want to learn deeper, there is a strange thing called $$\varepsilon -\delta$$ definition in the chapter 1. We might memorize this stuff but don’t understand clearly. This article will help you to clarify the concept about the definition. Preconcept function In short, function is a thing that you give something to it, and something else will

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### Three Doors Problem-Monty Hall Problem in the Movie 21

“Suppose you are in a game show, and you are given a chance to choose three different door. Now behind one of the doors is a new car, and behind the other two are goats. Which door would you choose?”
In the movie 21, Professor Mickey asked a question in his class. The play of the talk between Mickey and Ben impressed a lot of people. In fact, the question in the movie is a classic question – Monty Hall problem! Let’s take a look!

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### Hilbert’s paradox of the Grand Hotel-Welcome to the Hilbert’s hotel!

Welcome to the Hilbert’s Hotel! This is a hotel in Hilbert’s imagination. There are infinite rooms and infinite customer. No matter how many guests, you have to set enough rooms to let them move in. Are you ready to be a manager?

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College

### 0.999…. is equal to 1 or not?

0.9999……=1? This question shows up every year. It’s a 0.9999……=1 anniversary, right? Today MathPots also want to try to cook this stuff to everyone.

Go and Taste »
College

### [calculus]The example of ε-δ definition problem

In the last meal [calculus]The clarification of ε-δ definition, we knew the actual meaning of $latex \varepsilon -\delta$ definition. This time we are going to use it. In this dish, I will show you the basic problem in $latex \varepsilon -\delta$ definition. Hope to make you understand clearly!

Go and Taste »
Elementary

### What is Thales’ theorem? The little relationship between circle and right triangle.

Maybe some people would say that “who is Thales? I have only heard about Taylor Swift.” But you must have heard the theorem which I

Go and Taste »
College

### [calculus]The clarification of ε-δ definition

I believe that you learned the simple concepts of limit, integral and differential when you met calculus for the first time. However, when we want

Go and Taste »
College

### Three Doors Problem-Monty Hall Problem in the Movie 21

“Suppose you are in a game show, and you are given a chance to choose three different door. Now behind one of the doors is a new car, and behind the other two are goats. Which door would you choose?”
In the movie 21, Professor Mickey asked a question in his class. The play of the talk between Mickey and Ben impressed a lot of people. In fact, the question in the movie is a classic question – Monty Hall problem! Let’s take a look!

Go and Taste »
College

### Hilbert’s paradox of the Grand Hotel-Welcome to the Hilbert’s hotel!

Welcome to the Hilbert’s Hotel! This is a hotel in Hilbert’s imagination. There are infinite rooms and infinite customer. No matter how many guests, you have to set enough rooms to let them move in. Are you ready to be a manager?

Go and Taste »