Chapter 23: Must be responsible for Xu Qingzhou

Xu Qingzhou laughed and separated from Song Yao at the street corner.

Song Yao was stunned for a moment, then reacted to being teased. By this time, Xu Qingzhou had already walked far away, and she could only glare at his back in annoyance, turning to walk toward her own residential area.

The Song family's residential area was similar to the Wutong residential area, both belonging to the old residential area type.

On the way, Song Yao had already figured it out. She still had to tell her dad about this matter. Li Dingkang and these people were very chaotic, and they might find trouble for Xu Qingzhou.

Although she and Xu Qingzhou didn't have any intimate relationship, the cause was with her... she still had to be responsible for him.

When she went back, Zhang Junli was stir-frying, saying: "Your dad just called, he's coming back for dinner tonight."

Song Yao just put down her schoolbag when the sound of the door opening rang, and Song Shisong came back.

"Daughter, leave this matter to Dad to solve." Song Shisong also said in a deep voice.

Read! {

"Dad, wash your hands and eat." Song Yao helped serve the dishes. Her mom actually understood her dad's work, just always felt that her dad was working too hard and didn't take his body seriously, so she always wanted to choke him a few times.

He wasn't idle either, continuing to read math books. The knowledge of undergraduate studies is actually just that much.

"I want to see what you're writing." Song Yao's gaze looked at the draft paper in front of Xu Qingzhou.

Hearing the name Xu Qingzhou, a trace of complexity appeared in Song Shisong's angry mood. His daughter had endured it for so long, and suddenly said this matter, actually worrying about Xu Qingzhou being retaliated against.

"There is a person in our school named Li Dingkang, who was in the same class as me in junior high, and has been pestering me since high school,"

"Thanks." Xu Qingzhou was not polite either, picked up the bottle and poured two big gulps.

The old couple stopped their movements, and the living room quieted down.

Thinking that she had finally figured it out.

She was wearing a camisole dress today, revealing her small collarbone, her skin as white as snow, her long eyelashes trembling slightly.

Xu Qingzhou's score increased by 10 points, 720 points, still grade 1st place.

Song Yao seemed to notice that Xu Qingzhou had finished, and also stopped, pushing the water in front of her desk to Xu Qingzhou.

Song Shisong's face changed, suppressing his anger, and said seriously: "Little Yao, why didn't you tell me about such an important thing earlier."

!.

"Okay, thank you, Dad." Song Yao felt that this matter should be no problem.

【Surface modeling and reconstruction.】

The weather is gradually getting hot, and there are many students walking on the playground at night. Some are out to relieve stress, another group is feeling the atmosphere of parting, simply walking and talking, and some are couples facing the breakup season soon.

Sigh... pervert. The second mock exam ended, and the whole high school life seemed to be pressed on the fast-forward key, time passing fast.

"Know, it's in the second drawer."

Zhang Yuxin looked for Xu Qingzhou three times, and was seriously rejected by him. After the third mock exam, the other party was like a dud, suddenly giving up entanglement, which made Xu Qingzhou pleasantly surprised.

Song Shisong knew he was in the wrong, running outside every day, and could only laugh it off, saying: "I'm on vacation these two days, I'll take care of all the housework."

After this, he wanted to extend it slightly, trying to use non-linear differential equations to analyze geometric structures. So, he used the cases in the geometry book to perform calculations of non-linear calculus equations.

Time flowed away in the heat and noise of summer. "Dad, Mom, it's not that serious, I can solve these myself."

"I have a meeting tomorrow morning, remember to go pay the electricity bill. Do you know where the electricity card is?" Zhang Junli looked at Song Shisong.

"Someone is bullying me." Song Yao put down her chopsticks and said.

On campus, the atmosphere of the college entrance exam is gradually becoming strong, everyone is like a tightened spring, starting to sprint for the college entrance exam.

The first one, high-dimensional non-linear problem: from the oldest three-body problem, to fluid dynamics ns equations, to Einstein's general relativity equations, it involves a wide range of aspects, with a lot of knowledge content and high difficulty.

He is currently reading "Research on Methods of Non-linear Differential Equations," and at the same time, combining it with reading Gauss's work on calculus geometry, "General Research on Surfaces."

"Tell me what's going on." Zhang Junli's tone sank.

After drinking water, his brain was quite clear.

After Song Yao finished speaking, she seemed a bit troubled, saying: "He blocked the school to confess with flowers just now, Xu Qingzhou came out to help me, I'm afraid Li Dingkang will find someone to retaliate against him."

In the classroom, the fan was humming, intertwined with the teachers' lecturing voices.

Looking at the dense characters on the draft paper, Song Yao couldn't help but feel depressed. She was still struggling with high school math problems, and others had already started college derivation.

First, use non-linear integral equations to describe the basic geometric properties of the surface, first represent the surface as a function (z=f(x, y)), where ((x, y)) are the coordinates on the surface, and (z) is the corresponding height.

Xu Qingzhou handed it over and said: "I just tried to use non-linear calculus equations to describe the surface structure, the process went quite smoothly."

At noon, after eating lunch, Xu Qingzhou took his notebook to the library to continue reading.

The teachers changed their teaching state, no longer nagging like before, wishing to stuff all knowledge into the students' heads, but started to guide the students' mentality and check for gaps.

Zhang Junli picked up a piece of pork ribs for Song Yao, feeling a bit distressed, "It's okay, Little Yao, leave this matter to your dad. If he can't even handle a little hooligan, then what kind of captain is he? Go back to the countryside and farm."

Song Shisong was careful, seeing that his daughter seemed absent-minded, couldn't help but ask: "Little Yao, what are you thinking about?"

A set of discrete data points: 【0.5, 1, 1.5, 2】 y-coordinate: 【0, 0, 0, 0, 0】 z-coordinate: 【0, 0.4, 0.7, 0.8, 0.9】 Whoo~ Xu Qingzhou looked up, rubbed his temples, and noticed that Song Yao had sat opposite him at some point, currently doing problems seriously.

"Captain Song is finally willing to come back." Zhang Junli teased.

A family of three sat happily at the dining table.

Sure enough, after eating, Song Shisong, who just said he was on vacation, picked up the car keys and said there was something at the bureau, and he had to go out.

The grades of the entire senior year have improved a lot, because the questions in this exam are much simpler. To put it bluntly, it is to increase the students' confidence in the college entrance exam.

May, the third mock exam is coming.

Halmos's "Naive Set Theory."

The second one, limit problem: the core content of calculus is limit, and the definition of limit is one of the most difficult contents to understand in this course. The definition of limit is specifically divided into the definition of sequence and the definition of function. Because it involves a lot of function content, it is relatively difficult to understand.

The third one, function problem: including elementary function problems, intermediate function problems, and advanced function problems, involving a wide range.

Mathematics is an extremely huge discipline. Not to mention other profound things, even the above three points are enough for most people to spend their whole life energy to study.

However, the content currently encountered does not have much difficulty for Xu Qingzhou. He has learned it before, just not in a more in-depth and systematic contact.

(End of chapter) ===== CHAPTER 24 =====