When he thought of the bet back then, Huang Zitao wished he could dig a hole and bury himself.
No, he could not let this matter go just like that. He had to make Zhou Luo pay the price.
However, the most important thing now was how to avoid the bet.
"Teacher Ye, my stomach hurts. I want to take a few days off.”Huang Zitao said. He grabbed his bag and ran out of the classroom.
"…What's going on?" Ye Xiurong was a little dumbfounded. For a long time, she had a good impression of Huang Zitao.
Not only was his family well-off, but he was also very smart and studious. He was a natural genius.
But now, he actually " skipped class ", which greatly reduced Ye Xiurong's impression of him.
She took out her phone and dialed Huang Zitao's parent's number. After giving a few simple instructions, Ye Xiurong began to analyze the test paper.
Of course, a similar scene was happening in all the third-year classes of Northern Mountain No. 4 High School.
No one had expected that the first place in the Mathematics exam would be taken by the last place in Class 7.
Zhou Luo's name instantly became the most popular word in the third-year students of Northern Mountain No. 4 High School.
——
"The rage of a slacker…Congratulations to the host for obtaining Academic Genius Points 1... 556.”
The crisp sound of the system notification exploded in Zhou Luo's mind, pulling him back to land from the ocean of knowledge.
A series of 1s suddenly popped out at the end, 556!、
Zhou Luo was stunned. He suspected that there was a BUG in the system.
What was going on?
Looking at the records, Zhou Luo found the reason. It was Huang Zitao.
556 points in one go, that was probably all he could do if he didn't pay his debt.
However, after thinking about it carefully, Zhou Luo smiled happily. The more Huang Zitao hated him, the greater the benefits it would bring him.
This meant that he could obtain a huge amount of Academic Genius Points from Huang Zitao.
Good luck, Zitao, you are the best!
"Zhou Luo, get up and tell me how you solved this problem.”At this moment, Li Wei's " kind " words pulled Zhou Luo back to reality.
Note that Snis the first n terms of the arithmetic progression {an} and the constant a1=-7S3=-15
(1)Find the general term formula of {an}.
(2)Find the smallest value of Sn.
This was a problem of the minimum value of arithmetic progression.
The first question was relatively simple. He only needed to find the general formula. However, the difficulty of the second question suddenly increased.
Not only did he need the value, but he also needed to find its minimum value.
Teacher Li is creating an opportunity for me to show off.
He was truly a once-in-a-century good teacher.
At this moment, in Zhou Luo's eyes, Li Wei was no longer a black-faced fiend, but a little white flower without any sorrow or injury.
Zhou Luo walked to the blackboard and picked up the chalk. He did not answer immediately. He fell into deep thought.
Which method should he use to act tough?
Five minutes passed, and Zhou Luo did not write a single word. He stood in front of the blackboard in a daze.
"Zhou Luo!" "What are you waiting for?" Li Wei's face was ashen as he berated.”
"Erm, I'm thinking of using that method.”
"What? You have a few other methods?”Li Wei's interest was piqued. High school knowledge covered a solution to arithmetic progression. He was very curious about what solution Zhou Luo could " create ".
"Not much, just three."
“……”
"The first one." Zhou Luo raised his hand and wrote a capital one on the blackboard, then quickly began to solve the problem.
"Let the tolerance of {an} be d. From the question, 3a1 3d=-15"
From a1=-7 to d =2
So the general formula of {an} is an=2n-9
(2) From (1), Sn2 =n2- 8n =(n-4) 2, so when n=4, Sn2 is the minimum, and the minimum is-16.
"The second type."
Zhou Luo didn't stop and continued writing.
"f(Xi)*(b-a)=f(b)-f(a)... The minimum value is-16."
" The third general formula is an=2n-9…"
One, two, three!
The results of the three methods were exactly the same!
But each method was completely different.
Silence. Dead silence.
None of the 47 students in the classroom spoke.
It wasn't that they didn't want to say it, but that they had nothing to say!
Zhou Luo was so tyrannical that he even used the contents of the university. What could they say?
Knowing was one thing, but using it flexibly was another.
Zhou Luo was able to use the university's method to solve the problem, which proved that he was already familiar with the method.
"The last method, you used the neck splitting method?”After a long silence, Li Wei finally broke the silence in the classroom.
"Yes." Zhou Luo nodded.
"Where did you learn it?"
"Self-taught."
"Where have you learned?" Li Wei pressed on. This was the content of the university and was slightly mentioned in the high school elective textbook.
"Lagrange's mean value theorem and Ptolemy's theorem,"
"You're studying Advanced Mathematics by yourself?" Li Wei was stunned.”
"Yeah, but I've been studying Goldbach's conjecture recently.”
Zhou Luo was drooling over 500 Brainiac Points.
"..." A second ago, Li Wei was still overjoyed, but the next second, he was speechless as if he had eaten a fly.
Goldbach's conjecture was something that a high school student could come up with. Do you think you're Tao Zhexuan or Qiu Chengtong?
Even the two Fields Medal-winning mathematicians might not be able to figure it out.
However, as a homeroom teacher, he was very happy to see Zhou Luo's return. Not only did his student turn back, but he had also jumped from being at the bottom of the class to becoming a top student. He had even begun to study Goldbach's conjecture, a world-class problem.
This was worth encouraging.
"Work hard. If there's anything you don't understand, you can ask me anytime.”Li Wei patted Zhou Luo's shoulder and said seriously,""I look forward to the day when your photo is hung at the school gate.”
"And you guys, learn more from Zhou Luo and go to the library to enrich your campus life. Don't only know how to play games all day long. Do you think you're Zhou Luo who can get full marks in your sleep?”
"..." Everyone opened their mouths, unable to say anything.
This book is provided by FunNovel Novel Book | Fan Fiction Novel [Beautiful Free Novel Book]