Volume 1: Student Life Chapter 43 cannot be used directly to solve problems
When he woke up from this sleep, Chen Zhou felt as if he was in another world.
"I slept so comfortably..."
Chen Zhou stretched out on the bed, then reached out and touched the head of the bed.
I touched my phone, picked it up and took a look.
"Fuck! It's over..."
The time on the mobile phone shows 10:45.
Chen Zhou quickly jumped off the bed and put on his clothes quickly.
But I was wailing in my heart. Although I had a good sleep, Lao Wang must be furious.
"Hey, Chen Zhou, are you awake?"
Hearing this voice, Chen Zhou subconsciously shrank back.
When she looked towards the door again, she saw the old-fashioned man whom she least wanted to see standing at the door.
And then, he was holding a bowl of noodles?!
"Teacher Wang...Teacher Wang, why...why are you here? Please...please take a seat..."
As Chen Zhou spoke, he pulled his clothes in place, pulled out a bench, and invited Wang Xuehui into the house.
"Are you okay? I saw that you didn't go to class this morning and didn't ask for leave." Wang Xuehui put the noodles in his hand on the table, walked closer to Chen Zhou and asked with concern.
"I...I'm sorry, teacher. I overslept. I don't know why I..."
This was the first time that Chen Zhou overslept in his more than ten years of schooling. It had never happened before, so much so that Chen Zhou even stuttered when explaining it.
However, what Chen Zhou didn't expect was that Wang Xuehui interrupted him with a smile: "Did you study too late last night? And did you study until almost dawn the night before yesterday?"
Chen Zhou was stunned and said slowly: "Teacher, how did you know?"
"You don't need to ask me how I know this. You can't do this again in the future, understand? Health is the foundation of learning. Although we emphasize hard work, people are not made of iron. You didn't sleep all night, plus you studied so hard during the day, and you didn't sleep at noon yesterday. How could you bear it!" Wang Xuehui looked at Chen Zhou and said, "Go wash your face and eat this bowl of noodles. Forget it today, you can make up for it later. If you are late again in the future, I will make you do a self-criticism in front of the whole class."
Chen Zhou looked at Wang Xuehui, a little unsure. Is this old Wang serious? Is he so nonchalant and caring?
Is there really such a thing as good or bad academic performance?
Wang Xuehui saw that Chen Zhou didn't move, so he urged him, "Go quickly, the noodles will get cold soon and stick together."
"Oh, okay, thank you, teacher." Chen Zhou came back to his senses, nodded, walked out of the house quickly, and went to brush his teeth and wash his face.
Wang Xuehui sat in front of Chen Zhou's desk, looking at the scattered review materials on the table, and couldn't help frowning.
Looking around the room again, there was almost no empty space left, it was all piled with draft papers and old documents.
"You study very hard, but can't this room and this table be cleaned up?" Wang Xuehui couldn't stand it anymore and helped Chen Zhou organize the documents on the table.
When Chen Zhou returned to the room, he saw that Wang Xuehui had already arranged the review materials on the table neatly into small piles according to different subjects.
Wang Xuehui was concentrating on reading a piece of draft paper.
Chen Zhou thought about it, walked closer silently, and looked in the direction Wang Xuehui was looking.
On this draft paper are the notes he took while studying Lagrange's mean value theorem and some application examples.
Fortunately, it’s not some messy notes…
I took another look at the backpack. It was intact and had never been opened. Then... the unfinished papers and handouts should also be safe.
"Ahem..." Chen Zhou coughed twice before asking knowingly, "Teacher, what are you looking at?"
Wang Xuehui saw Chen Zhou coming back, pushed the bowl of noodles away and said, "Eat the noodles first."
Chen Zhou obediently picked up the bowl and started eating.
Wang Xuehui focused his attention on the draft paper again. After reading it all, he said, "Chen Zhou, when did you learn this?"
Chen Zhou thought for a moment and replied, "I learned it recently."
Wang Xuehui asked again: "Did you teach yourself?"
"Yeah." Chen Zhou nodded.
Wang Xuehui asked curiously, "You don't normally have access to this knowledge. How did you think of learning this?"
"Well... just to make the problem easier to solve, I searched on Baidu and found this theorem. Out of curiosity, I clicked on it and took a look. I found it quite interesting, so I studied it." Chen Zhou reluctantly explained the reason as his love of learning.
“So how does it feel to learn?”
"It's pretty good. It's very useful in solving some function problems."
Talking about this, Wang Xuehui nodded with satisfaction. For such a studious student, what else could make him late except studying?
Objectively speaking, Wang Xuehui was right.
After a pause, Wang Xuehui thought of something and said to Chen Zhou, "What if the teacher tells you that this theorem cannot be used directly in the college entrance examination?"
"No way? Why can't I use it directly? What will happen if I use it?" Chen Zhou's face was full of confusion and bewilderment . This is such a useful theorem, a theorem that I learned through practicing Taoism and working hard, and you tell me that I can't use it directly?
Wang Xuehui explained: "Because this is advanced mathematics knowledge, it does not belong to the scope of high school mathematics. High school mathematics cultivates basic mathematical literacy. It emphasizes mathematical thinking and the standardization of each problem-solving step."
"For example, let's not talk about how many students know the Lagrange mean value theorem. Even if everyone knows it and remembers it, they can only remember the theorem itself. They almost don't understand the ins and outs of the theorem. In this case, using it directly when solving problems is just a shortcut. Moreover, if you write it wrong, you are more likely to not get a single point."
"But then again, if you really understand the ins and outs of this theorem and know how to prove it, you don't care whether you use it directly or not, right?"
After Wang Xuehui finished speaking, Chen Zhou didn't react for a long time, so that the noodles he picked up were left hanging in the air.
It's all a matter of perspective.
When Chen Zhou was studying Lagrange's mean value theorem, he thought about how to use it directly and how to solve problems more easily.
But they ignore the fact of taking the college entrance examination.
The college entrance examination can be said to be an examination of twelve years of basic education. If you use knowledge of advanced mathematics beyond the syllabus, it may make solving the problem easier, but as Wang Xuehui said, if there are writing errors , how will you get the points?
The reason is very simple.
Questions that can be solved step by step using basic knowledge can show the results of your years of study.
But if you use knowledge beyond the syllabus and directly substitute it into the theorem, you won't understand anything.
Not to mention, even the substitution is wrong.
When Chen Zhou thought about it from Wang Xuehui's perspective, he understood.
But when he thought that this was a hidden task of the system and that it would never let him learn a theorem that he could never use, Chen Zhou just felt tired.
Considering Wang Xuehui's words again, it turns out that cultivating immortals is just the beginning, and the big fish of Lagrange's mean value theorem has just surfaced a little.
Chen Zhou sighed silently in his heart, finished eating the noodles, and said to Wang Xuehui: "Teacher Wang, I understand. Thank you, I will use this theorem carefully. Also, will you take this bowl with you?"
"Bowl, why should I take it away? Give it to your landlord ."
"landlord?"
"He is my brother."
"???"
