Math professor returns to routine

Chapter 198 The End of the Provincial Competition
After a lot of hard work, Lu You finally got rid of the boy named Zhang Zhichuang, and was able to rest for a while, adjust his state, and prepare for the next second test.

After 5 minutes, all candidates returned to their seats.The invigilator scanned the classroom, saw that there were no vacant seats, and began to distribute test papers.

As Lu You expected, the difficulty of the second test was not at the same level as the first test.There are only four answer questions on the test paper, but the test time is 9:40-12:30, which shows how difficult the questions are.

Four questions, namely geometry, algebra, number theory and combination.The first two questions are worth 40 points, and the last two questions are worth 50 points, for a total of 180 points.

After going through all the questions carefully, Lu You came to a conclusion: [-]% off?
"It is said that it is in line with the International Olympiad, but it is not the real difficulty of the Olympiad after all. After nearly three hours, Tang Wan can also solve more than two questions."

After thinking about it in his heart, Lu You picked up the pen, imitating how to play with hidden weapons in martial arts novels, and thought about throwing it all over. As a result, he became unsteady, and the pen flew towards his school uniform, drawing a long line of handwriting on the pure white fabric.

Lu You bent down, picked up the pen with a calm expression, and sat upright.Fancy things are still not worth it, if you break the nib, you will have nowhere to cry.

9:40
Exam begins.

Without hesitation, Lu You drew a few auxiliary lines on the geometric figure, and after thinking for a while, sorted out the ideas for answering the questions, and began to write quickly.

The handwriting on his answer sheet was pulled out smoothly and silkily, without any hesitation, just like the answer of a constipation patient using Kaiselu.

While other students were still trying to draw auxiliary lines to find ideas, Lu You was already thinking about the second algebra problem.

Algebra, at first glance, looks very advanced, and it feels like you have never learned it, but in fact, you have been exposed to it in elementary school.The most typical example, chickens and rabbits in the same cage, can be easily solved with a one-variable equation.And this elemental equation belongs to algebra.

The question in front of Lu You is to give an unknown condition and ask him to prove that the following equation is true.

Lu You has seen this type of questions a lot, and has written a lot of questions for the finale of the college entrance examination.The characteristic is that the number of words is very small, but the answer cannot be seen at a glance, and it is necessary to write and deliberate repeatedly.

Lu You took the precious 10-[-] minutes to save face, intensively calculated half a page of draft paper, and after repeated thinking and summarization, he wrote the complete and meticulous process into the answer sheet.

Then, he set his sights on the third number theory.

The most obvious feature of number theory is that the conditions given in the title must show that a certain number or certain numbers belong to integers, and then to prove the characteristics between integers, it can also be a specific solution of the equation.

This kind of question is extremely abstract, and it is something that cannot be encountered in eight lifetimes in real life.Although algebra is also abstract, at least you can count chickens and rabbits, can't you?
"Poor Wanwan, you must have a headache when you see this kind of question!"

Lu You gave a silent tribute to his girlfriend, then continued to concentrate, and tried to solve the problem using the corresponding problem-solving method on the draft paper according to the type of problem.

No matter how difficult the Olympiad questions are, the essence is to solve them, not to explore in the field of mathematics.And as long as it is a question, you can sum up a set of corresponding problem-solving ideas, which is called test-taking.

The remaining two courses of number theory and combination worth 100 points did not cause much trouble to Lu You. It took nearly an hour and a half to complete successfully.

For him, solving math problems is like being at the starting point, knowing where the end point is, and seeking the correct path between the two.

The huge knowledge base possessed by him is the best raw material, and his rich experience can fully use the raw materials to form a powerful compass to lead him forward.

The journey will take time, but it will definitely reach the destination smoothly.

After checking the test paper, Lu You looked up at the time.

11:40
Well, I can sleep again.

Lu You tidied up the table and fell asleep peacefully with his arms as pillows.In high school, no matter the grades are good or bad, there is no one who cannot sleep.

Zhang Zhichuang, who had almost finished writing the second big question next door, was still struggling with whether the process of solving the question was correct or not. When he saw Lu You lying down again, a crack appeared in his rock-solid Dao heart.

Mahler Gobi, where did this pervert come from!Stronger than me!
Zhang Zhichuang's comprehensive score can only rank in the top [-] in the city, but he is definitely the uncrowned king in mathematics alone, no one is better than him.

However, this time Embiid directly wiped the floor-opened his eyes.

Zhang Zhichuang's mentality fluctuated for only five seconds before returning to normal.No matter how fast others do it, it's none of his business. Your own problems are the most important.

……

12:30
The winding bell rang on time, and more than 80% of the people in the classroom were relieved.

After all, not all students have undergone formal Olympiad training, and it is really difficult to do these extremely difficult questions. Most of them just complete the first question, and only a few sporadic strokes for the rest of the questions.

Lu You stretched his stiff arms, his face was not very good-looking.

He had a nightmare just now. He dreamed that he and Tang Wan were cousins, blood relatives within three generations. Due to ethics and laws, they couldn't be together, and they were almost numb.

At this time, Zhang Zhichuang took the stationery and moved to Lu You's side, his eyes stared like copper bells, and asked, "Did you finish writing ahead of time again?"

Lu You glanced at him, stood up holding a transparent pencil case, and said, "Otherwise?"

"how did you do it?"

"Learn more, watch more, practice more."

After finishing speaking, Lu You made a detour from the other side of the seat, and Zhang Zhichuang followed quickly, talking non-stop.

"I think I have learned enough, but I only finished writing three questions, and I have no idea for the last question."

"Hehe, I won't say too deep, how much do you know about ODE and PDE? What are the applications of Fourier analysis? What do you remember about the various properties of abstract algebra? Have you ever studied differential topology? Lie groups, Lie algebras and Riemann What about geometry?"

"Uh……"

Zhang Zhichuang scratched his head in embarrassment, and said, "I've heard of it, but I don't know about it."

"Then you still dare to say that you have learned enough? Who gave you the courage, Liang Jingru?"

"Can learning these improve the speed of writing questions?"

"No."

"Why should I learn if I can't improve?"

Lu You stopped, turned his head and looked at Zhang Zhichuang expressionlessly.

"Before answering your question, you need to figure out another question. Do you study mathematics to write questions faster, or do you want to really step into the field of mathematics.

If it is the former, I suggest you go back and buy a few Olympiad exams to study, which is a hundred times more useful than asking me.If it's the latter, then get to know the subject in depth.

I can tell you clearly that mathematics is an extremely profound and vast world, and doing problems and studying mathematics are completely different things.
Even if you get a full score in IMO, it only shows that you have the ability to solve problems, not that you are talented in mathematics. It doesn’t even count as half a foot in the field of mathematics, let alone a small provincial competition. .

Find out what your needs are, and then do the corresponding things. That's all, think about it yourself. "

Afterwards, Lu You ignored Zhang Zhichuang who was thinking for himself.

For a person who has known each other for less than four hours, it is already a great honor for him to spend time talking a lot, not to mention there is a girlfriend waiting for him to pick him up.

Lu You came to the open space next to the podium, found the schoolbag randomly placed by the invigilator, took a picture of the footprints left by some wicked boy, stuffed the pencil case into it, carried the schoolbag on his back, and walked out of the classroom.

As soon as she went out, she put on a full face with Tang Wan who was looking for her.

Feeling the soft balls of water polo in front of him, Lu You's mood suddenly brightened.

Tang Wan came out of his arms and said joyfully, "What a coincidence?"

"Why did you come here?"

"Thinking of you coming to find me, I will also take the initiative to find you and go in both directions, so that we can meet earlier."

"You can apply mathematics."

Hearing the girl's voice, Zhang Zhichuang came back to his senses, looked at the source of the voice, and was dazzled on the spot.

Holy shit!so beautiful!

Zhang Zhichuang raised his hand tremblingly, pointed at Tang Wan, and asked, "Brother Lu You, who is she, she looks very familiar with you!"

"She's what you call an 'ex-wife.'"

"real or fake!"

Tang Wan couldn't understand the conversation between the two, so she introduced herself to Zhang Zhichuang: "Hi, I'm not some ex-wife, I'm his current girlfriend, and my name is Tang Wan."

"It's really Logan!"

"I'm going first, see you, Brother Hemorrhoids."

Lu You didn't bother to pay attention to this surprised guy, pulled Tang Wan's wrist, turned and left.

When Zhang Zhichuang saw the two disappearing at the stairs, he suddenly remembered that he didn't ask Lu You for his contact information.

"Oh, forget it, let's save it for next time, and we will definitely meet again in the national competition."

Although Zhang Zhichuang was not as good as Lu You, he still had the confidence he should have. He was sure to enter the national competition.

……

After walking downstairs, Lu You let Tang Wan go.

It's still too presumptuous for fair-minded men and women to hold hands in school, even if they're not in their own school.

"Lu You, why did that guy with hemorrhoids call me his ex-wife just now?"

"Um……"

Lu You originally wanted to correct Tang Wan, his name was Zhang Zhichuang, and he didn't have hemorrhoids, but after thinking about it, forget it and let this beautiful misunderstanding pass on.

"You can know what's going on after you google your own name."

"Okay, I'll check when I get back."

"How did you do in this exam? How sure are you?"

Tang Wan recalled the scene when she was doing the questions, and said: "The first test paper is not bad, I can do it basically, and I have finished all of them. How much points I can get depends on how the correcting teacher corrects the paper."

"What about the second one?"

"The second one is more difficult. I personally don't feel very optimistic. I will get 40 points for the first two, and I will write the process beautifully. Even if I deduct, I won't deduct many points.

I really don’t know how to do the last two questions. Just according to what you said, write as many ideas as you have. If you are lucky, you will get a few points. The two test papers add up to 220. "

"what!"

Lu You chuckled twice, rubbed Tang Wan's beautiful hair, and said, "That's enough. We're not Shang Hai. According to previous years' scores, 220 points can already securely enter the provincial team."

"yes!"

Tang Wan's expression became lively all of a sudden, and she asked, "When will the results come out?"

"That will take until October."

"Long time! Don't you just change a few test papers? Why does it take a month?"

"The process is cumbersome. After correcting the test papers locally, the first, second and third prizes are selected, and the answer sheets for the first prizes have to be handed in to another group of people for review, and members of the provincial team are selected. Only then can they be announced score."

"Too tortured!"

"Good things take time, that's right!"

At this moment, a few classmates trotted by beside them. Seeing that the two were still walking slowly, they said, "The school bus is about to leave, so hurry up!"

Lu You and Tang Wan looked at each other, and immediately took steps.

　Second update, 10 minutes late
　　
　
(End of this chapter)