Fang Chao, who was gifted enough in mathematics, lost his bias in the measurement between the Chinese language and the relationship between mathematics, which brought him to the brink of collapse.

It was not easy to appease them, but Fang Chao was sweating profusely.

It took more than half an hour for Fang Chao to return to work.

[Based on the ideal state...... Let f(x)f(y)......]

[When the definition field is at (-∞,0), then it ......]

[And when the definition domain is in the interval (-1,0), it ......]

……

Fang Chao was writing while scratching his ears and cheeks, on the verge of collapse.

Writing an essay and writing mathematics are completely different things, and it will take at least a long time for Fang Chao to get such an article, which is undoubtedly a torture for Fang Chao.

But the road to Xueba itself is difficult, and Fang Chao has realized something.

The progress of the article was 23% complete, which took Fang Chao a full day.

Lao Zheng hadn't seen Fang Chao for a few days, and he couldn't help but be a little worried, after all, it was almost ten days, so he took the initiative to call to inquire.

"Fang Chao, you've been on leave for a few days, are you okay?"

"It's okay, teacher, I should have to take another four or five days off, and when I'm done with this, I'll go back to school right away."

"Hey, I don't know what you're doing, but it should be a pretty good thing, come on."

"Thank you, teacher."

"By the way, the school sports meeting is about to start in ten days, you signed up for the 8,000-meter run, and you haven't trained for a while, will there be problems with the school sports meeting at that time? If there is a problem, the main thing is to participate, you can run a 2,000 meter almost, and the rest will be said to be out of physical strength, anyway, the school cannot force students to really run the 8,000 meters. ”

Lao Zheng was still very concerned about Fang Chao's physical condition, after all, this was not an ordinary student.

Fang Chao felt a trace of warmth in his heart, "Teacher, I'm fine, eight thousand meters is not much pressure on me, what really gives me a headache is that I have to write the next article right now...... It took me a day to write a fifth of the progress, and if I had to finish it, it would take me five days...... I'm a fanatic about knowledge, and mathematics seems to be a fatal temptation for me, but when I was editing this language, I got into a dilemma, teacher, can you help me? It's too hard for me. ”

Fang Chao really wanted to find someone for help, and wanted to express the unhappiness in his heart, this was the first time he had been like this since he had continuously had achievements.

Teacher Zheng couldn't help but be a little amused, "Fang Chao, you seem to be teasing me when you say this, what else can stump you?" With your current grades, even if you don't take the college entrance examination, you can easily enter Qingbei and Peking University, and you tell me that you are too difficult, so what do you think of the students in the class? ”

"Teacher, this is really a stumbling block in my path...... But if I don't get it done, I'm going to be stuck in this place. ”

Teacher Zheng couldn't help but be a little curious, "I'm a little curious, so tell me, what are you doing?" ”

Fang Chao said, "Teacher, it's not a thing, it's about finding the function value of the band definition domain, referred to as the waveguide function, my senior brother said that there is no problem with my argument, but it is better to publish it in the journal of mathematics, which will be of certain benefit to me to enter Princeton in the future, saying that it will be published in the Annals of Mathematics Series A first, and then it is more likely to be published in SCI, so I thought about getting this thing done and said, teacher, can you help me?" Or help me with ideas? ”

Teacher Zheng said, "Well, then let's do it, I'll give you a few more days of vacation, that is, when the school sports meeting remembers to come back and refuel the classmates, after all, you are still the class leader of the fifth class, and you can't be seen at the critical moment." ”

Fang Chao said, "Don't worry, teacher, I will definitely be able to return to school in time for the school sports meeting." ”

Teacher Zheng, "Then let's do it first, I still have something to do here, hang up first." ”

Doodoo~!

Lao Zheng does things like this, he has always been vigorous and resolute, very considerate of Fang Chao, and he didn't bother him when he was given a holiday, but Fang Chao always felt a little weird, Lao Zheng didn't seem to say that he wanted to help him......

Never mind.

After all, you have to take care of your own affairs.

What is curious is that Fu Lingyan also sent WeChat to care about herself.

Fu Lingyan's question was very simple: "I said class leader, you have to squeak if you're fine, right?" I can't see you all the time, you can't be the class leader and then completely become the shopkeeper, do you still have a school sports meeting? ”

When Fang Chao saw this, he couldn't help but smile bitterly, sure enough, he was incompetent as a squad leader, since he became a squad leader, the number of times he was in the class was almost a handful.

So after thinking about it, Fang Chao replied with a word.

[Squeak! 】

Zhang Ling also looked for Fang Chao, and her way of asking was relatively simple: "Senior, I haven't seen you appear on the playground for a long time, can we still run together in the future?" (ps: Senior Fang Chao, I know your true identity)"

Real identity?

My real identity?

What is my real identity......

Fang Chao was a little unsure, but he quickly reacted, and couldn't help but have three black lines on his forehead, feelings Zhang Ling You never knew the identity of my scholar? Did you only know about it recently?

No wonder they always ask me if I am from the school team, and they do everything possible to let me join the school team, so everything is like this......

Does she mean that she is afraid that I will not run with her in the future? What do you think~"

Fang Chao was a little helpless, running was his daily compulsory course, even if he didn't meet Zhang Ling, he would not break his sports cells, if he wanted to become a strong student, he had to have a strong physical condition as a foundation.

But for Zhang Ling's words, Fang Chao is not disgusted, and even has a special emotion for her, this emotion is not love, but a difficult way to describe it, it can be said that Fang Chao misses her a little, but this kind of thinking is because every time Zhang Ling is around, Fang Chao can more or less find some inspiration, for example, this time the waveguide function is obtained from Zhang Ling's body.

Therefore, if this is possible, Fang Chao is still very willing to have an in-depth understanding with Zhang Ling, so as to become good friends, in this way, Fang Chao will not have to worry too much about the inspiration in mathematics in the future.

So Fang Chao replied, "No, I'm busy with math problems during this time, just wait for this time, and we will run together when we have the opportunity in the future, don't I still owe you a movie?" ”