my scientific age

Chapter 131 Lectures!

The next day.

At dawn, there was a white light in the sky in the distance. Yu Hua woke up naturally under the drive of his biological clock, got up to wash, put on a plain clothes, took the backpack prepared in advance and left after his busy work, left the school, and went straight to the Zhonghua Post Office in Xicheng District. .

Under the stunned and weird eyes of the post office staff, the whole person left things, paid and left, and soon returned to school to start a new day of study and life.

As Master Hua Luogeng said, learning is like sailing against the current. If you don't advance, you will retreat. There is no time for him to waste.

After breakfast, Yu Hua was the first to arrive at the classroom. Yu Hua took out the "Mathematical Analysis" he carried with him and began to study.

The course "Mathematical Analysis" belonged to the first semester of the mathematics department and the first semester of the sophomore year, and the theory of real variables was the course of the second semester of the sophomore year. However, during the Republic of China, the two were just reversed. Since function theory has not been developed for a long time, it is not as difficult as mathematical analysis with 'proof' as the core.

Of course, for many scumbags, the difficulty of these two courses is basically the same.

You look at me, I look at you, no one knows anyone.

Mathematical calculus is essentially a branch of mathematics based on calculus. In terms of age, modern calculus is still a young man who is just about 200 years old. His seniority is not as good as his grandfather's grandfather's analysis, but its status and importance are far higher than Classical Analysis.

After Cauchy and Weierstrass perfected and redefined limit theory, the 'charm' of fractional points began to bloom.

Generally speaking, the content of advanced mathematics and mathematics are basically the same. The difference between the two is that advanced mathematics uses calculus as a mathematical tool, while mathematics is to help people establish mathematical ideas.

If you switch to reality, those who learn advanced mathematics are all kinds of questions, and those who learn mathematics points are all kinds of... proofs.

After learning it, the subjective feeling is - this thing has to be fucking proved?

Can you prove that?

Just like Yu Hua opened the original English textbook of "Mathematical Analysis" by Cambridge University, after reading the first part, his brows were slightly wrinkled, and he thought, he did not expect these basic concepts of calculus he had learned to prove it .

interesting.

very funny.

Yu Hua came to the spirit and rotated the pen in his right hand. The whole person fell into thinking, constantly solving one doubt after another, and gaining knowledge. Although the learning efficiency was not as high as Hua Luogeng's lectures, it was better than the quantity.

At this time, Fang Yu stepped into the classroom and looked at the middle area of ​​the classroom as always. After seeing Yu Hua's figure, a smile appeared on his face subconsciously, and then he returned to his seat to start self-study.

Yu Hua is always the first to come to the classroom to study. Fang Yu is not surprised by this, and even influenced by Yu Hua, she came to the classroom earlier than before.

The previous drawing class had already been completed. Fang Yu and Zhou Yuan basically mastered the drawing standards and knew how to draw images of various mechanical equipment and metal parts.

After Fang Yu arrived in the classroom, other students arrived one after another, Zhao Anyuan, the monitor Li Jian, Liu Tao, etc. Before he knew it, the classroom was gradually filled with students.

Yu Hua is immersed in the world of numeracy, his mind is relaxed and his mood is happy, and he continues to deepen his understanding of calculus, a top mathematical tool. The seemingly difficult and abstract numeracy contains the precious value of 'knowing it and knowing why' Knowledge, which is not available in Calculus courses.

With a solid foundation in calculus and real variable function theory, Yu Hua did not find it boring to learn mathematics, but rather enjoyed it.

After an unknown amount of time, Yu Hua suddenly felt someone beside him. When he looked up, he saw Luo Wenguang, Mr. Ren with a smile on his face. Then he looked around. All the students were sitting upright.

"I'm sorry, sir, the students were so fascinated by it that they forgot the class time." Yu Hua realized that something was wrong and quickly apologized.

Luo Wenguang smiled, indicating that it's okay, and glanced at Yu Hua's teaching materials for fractions on the desktop: "Yu Sheng, are you already looking at fractions?"

As a top-level teacher who has taught for decades, Luo Wenguang is naturally knowledgeable.

Luo Wenguang did not expect that Yu Hua's learning progress had reached the level of several points.

"Yes, the teaching materials that Professor Hua gave to the students."

Yu Hua was stunned for a moment and answered truthfully.

"How did you learn?" Luo Wenguang nodded and continued to ask.

"Just watched it, it feels okay."

Yu Hua scratched his head embarrassedly and said.

Luo Wenguang said with a smile: "It's okay, then it means that you can go in, yes, Yu Sheng, I want to hear what you have to say about this math class, how about it?"

The implication is to let Yu Hua go to lecture.

As soon as these words came out, the surrounding students were stunned for a moment. Mr. Ren's proposal was the first since he went to school.

Darling, has Yu Hua's math level reached the level of teaching everyone?
The surrounding students were surprised, but thinking of Yu Hua's unattainable academic grades, they felt that there was indeed no problem.

Since the first month's quiz in early March, Yu Hua's scores in arithmetic and other science subjects have not fallen below [-]%.

The stability of the score is disappointing!

The gap between people can actually reach such a level.

Fang Yu, who was still sitting in the second position in the first row, was full of expectations, and his eyes fell on Yu Hua.

"Let me give a lecture? Uh... well, but I may not speak very well." Hearing this request, Yu Hua was stunned, but he was not afraid, thought for a while, nodded in response, and stood up.

"It's okay, let's go."

Luo Wenguang smiled, turned sideways to clear the space, and after Yu Hua left his seat, he said to everyone in the classroom, "Today's first math class, I will give you a lecture and a teacher's ceremony for Yu Shengdai."

After he finished speaking, he sat down and looked at Yu Hua with a look of anticipation.

Under everyone's attention, Yu Hua walked straight to the podium, just giving a lecture, no big deal.

After Yu Hua stood on the podium, the monitor Li Jian and the other students stood up and performed the teacher salute according to the rules, and Yu Hua returned the salute.

After the ceremony, sit down.

In the classroom, it is quiet.

Everyone's eyes were fixed on Yu Hua, Fang Yu quietly watched Yu Hua who was close at hand, since the end of the drawing class, she hadn't seen Yu Hua so closely for a long time.

Today's math class, mainly to review the definite integral of derivatives.

After taking a look at the whole topic, what immediately came to mind was various second-order derivatives and third-order derivatives, as well as definite integral proofs using fractional thinking. In the mathematics stage, when you are ready, you will start the lecture: "Today I will talk about the definite integral of the derivative. Fang Yu, please answer the definition of the definite integral."

(End of this chapter)