My Love Youth is Really Learned in Vain/my Spring Things Can't Be Learned in Vain

　Yi Lingyuan and Yukinoshita Yukino felt that if they could, they would never want Yui Hama Yui to enter the kitchen.

　After sending Yubihama Yui home, Yi Lingyuan declined Mrs. Yubibin's dinner invitation, and returned to Nakano's house for another dinner.

　After all, tomorrow is the exam. Naturally, I gave these pickle scumbags a good night of tutoring.

　next day

　Exams are coming soon, and the whole school is naturally filled with a strong depressive atmosphere.

　In the original morning, there was no laughter of all kinds, but the sound of Lang Lang's reading was endless.

　With the sound of the exam bell

　The list of examination arrangements at eight o'clock was posted in the corridor.

　Yi Lingyuan also followed the tide of people to the corridor to look at the white paper with densely written names.

　【Yi Lingyuan】

　Seeing that his name was at the top of the list, Yi Lingyuan knew that the seats were basically arranged according to nouns.

　Influenced by the inland of China, Zongwu High School basically arranges the seats according to the rankings every time in the exam. Only in the big exams will the order be disrupted and the seats will be assigned.

　looking down

　[Yukinoshita Yukino] This daily second is also familiar with her name. Before Yi Lingyuan joined the service department, it seemed that she could only see Yukinoshita Yukino during the exam.

　 As for the name below the list, Yi Lingyuan is basically very familiar, after all, it has been more than a year, and everyone is a familiar face.

　【Suzuki Noki】

　【Hideji Kitahara】

　【Miyazaki Yuzuru】

　【Fuutaro Uesugi】

　【Only I am lucky】

　【Aoki Division】

　【Qin Feng】

　【Fukuzawa Fuyumi】

　I always feel that Hideji Kitahara's girlfriend named Fuyumi is really miserable enough. It's really pitiful to compete with the above school masters who are either cheats or geniuses all day long.

　After packing up his rulers, pens and other tools, Yi Lingyuan packed up his desk and leisurely ran to the upper right corner of Class A to wait for the exam to start.

　Yukino under the snow appeared in Yi Lingyuan's line of sight after a while, and the blood color returned to her pale cheeks, but she still coughed lightly from time to time.

　"How is your cold?"

　"Instead of worrying about me, you should work hard to prepare for the upcoming exam."

　Sitting back in her seat, Yukinoshita Yukino covered her light coughing with her left hand, and said to Yi Lingyuan seriously:

　"After all, if you have a flaw, those behind you will mercilessly drive you off the number one throne."

　Hearing Yukino Yukinoshita's words, Yi Lingyuan couldn't help but raise the corners of his mouth proudly, and the black pen was lightly turning on his fingertips:

　"Don't worry, if you don't get sent to the hospital by your car anymore, then the number one this time will naturally be mine, the second student in the millennium, Xue Shixia"

　 "Contempt and carelessness are the main reasons for losing points, and at this time you have both."

　"So, this time I won't lose if I am the first in age."

　"Then, do you want to gamble, Yukinoshita?"

　"Gambling is a vice."

　"Ah~ that's it, then forget it, anyway, you never beat me under the snow, so forget it if you don't gamble"

　"you---!"

　Seeing Yi Lingyuan leaning on the table and sighing contemptuously, Yukinoshita Yukino's eyes shone coldly.

　"It's really a bad way to fight ~~! I agree with your bet, so what's the bet?"

　"Hmm... haven't thought it through yet, let's agree to a reasonable request from the other party first."

　"I always feel that the scumbag you put forward is very dangerous... You are not thinking of doing bad things to me by this, are you?!"

　(Obviously the night before yesterday you took the initiative and I couldn't help it)

　Of course, Yi Lingyuan would definitely not say these words, but just smiled undeniably:

　"Don't worry, for the time being, I still abide by the law. At least I'm much kinder than someone who destroys the corpse."

　After the on-the-spot agreement, Yi Lingyuan and Yukino Yukino did not say much, and each adjusted their state to prepare for the showdown.

　The number of people in the classroom gradually increased, and it was already full in just a few minutes.

　as the bell rang again

　exam begins

　The war between Yi Lingyuan and Yukino Yukino also begins!

Chapter 110 Eight Chinese and Mathematics

　Known function f(x)=-x2+2x

　(1) It is a subtraction function on [1, +000);

　(2) When x ∈ [2, 5], find the maximum and minimum values ​​of f(x).

　Yi Lingyuan basically knew the way to solve the problem at a glance. This kind of function problem with no Nandu was about to vomit when he was in the first year of high school.

　answer:

　（1）证明：在群建【1，+oo）上任取X1，X2，且X1＜X2

　F（X1）—f（X2）=（-X12+2X1）—（-X22+2X2）=（X2-X1）

　∵X1, X2 belong to [1, +oo), W1<X2

　所以：X2-X1＞0，x1+X2-2＞0

　That is, f(X1)-f(X2)>0

　(2) I will leave it to you. Anyway, I basically forgot how to solve the problem.

　After easily completing the boring math test paper, Yi Lingyuan tilted his head and looked around in boredom.

　Although everyone knew about this age number one, their hearts sank after seeing Yi Lingyuan finish the test paper so quickly.

　It took less than an hour to complete the test paper. Unless it was filled out indiscriminately, it was possible to check the entire test paper five or six times.

　For those who are really good at mathematics, but seeing this speed, they basically know what they are doing.

　(The author completed the math test in one hour and 20 minutes at the fastest time. He was bored and checked the entire test paper three times, and he also saw a student who did it faster than me.)

　Relying on the ease of the teachers on weekdays, Ling Yuan even arrogantly tested his body to see how Yukinoshita was doing.

　Sensing the arrogance of the person in front of her, Yukino Yukino did not raise her head Mathematical symbols form a stark contrast.

　Of course, it doesn't mean that Yi Lingyuan's habit is not good, but sometimes when he calculates again, he often can't find the problem he just did, and the process goes to the corner of the manuscript paper.

　(Knocking on the blackboard, the students of the college entrance examination will save a lot of trouble when they pay attention to keeping the order of their draft paper for the second check.)

　I have to admit that Yukinoshita Yukino's mental quality is still very good, and she pretends not to see Yi Lingyuan winking at her like air.

　Yi Lingyuan, who felt bored, also felt that his behavior was quite boring, if Yukino Yukino could be provoked by himself so easily, he wouldn't be Yukinoshita.

　Turn your gaze to the old friend you run into every exam.

　The gloomy boy who won 3.9 million won in the cafeteria before wrote quickly with a serious face, and Hideji Kitahara, who was rumored to have both sisters, was also serious, obviously this time the topic was not for these people. No matter how challenging it is, each of them has a certified serious expression.

　In contrast, the leisurely Suzuki Noki and the moody Miyazaki Yuzuru are more in line with the difficulty of this test.

　As for the bald Yi Lingyuan who is also at the top of the list, I think it is better not to look at it. I always feel that this person exudes a dangerous aura. It is not impossible that he is related to another person named Qiyu. Then he will be punched. ok but it's interesting.

　After finishing the math test in the morning, Yi Lingyuan couldn't wait to find those pickle sisters, wondering what kind of expressions those idiots would have.

　I have never felt that the five scumbags of Zongwu's high-level exams are very dim compared to now, and their mentality may have collapsed.

　. . .

　. . . . .

　student cafeteria

　The five identical quintuplet beautiful girls are still very conspicuous at a glance, not to mention that they are all lying on the table in dejection at this time, and even May, who has always been gluttonous, didn't order food.

　"How about it, did you feel the cordial greetings from Sobuko?"

　"......................"

　Seeing people who have been completely black and white completely silent, it is obvious that they have been shut down by the math test.

　"Actually, Zong Wugao's mathematics difficulty is considered low this time."

　"Low? Really?"

　Kazuka Nakano, who was last in mathematics among the five, was taken aback by Yi Lingyuan's words.

　"Well, at least it's much better than the test papers in Jiangsu and Zhejiang provinces in China's interior."

　"That fabled area, I heard that in the year when Mr. Ge came up with the question, it seemed that some people wanted to jump off the building after finishing the math test."

　Thinking of her math problems in Jiangsu and Zhejiang provinces in "May [-]", Kazuka Nakano felt a lot better. At least there are people who are more miserable than herself, right?

　"So, in fact, it's okay if the questions are more difficult this time. The difficulty is something that everyone thinks is difficult. So there is no need to be depressed."

　Sitting next to them, Yi Lingyuan analyzed seriously and comforted the five exhausted people.

　When I came here, I wanted to check the answers with these five pickle sisters to hit them. The bad idea also dissipated. If they really messed up their mentality, they would really be unable to pass the exam after that. up.

　(After the college entrance examination, if anyone has the same answer as you, you will slap him. After the exam, you will immediately go to the next exam. Don’t do such meaningless things that easily mess up your mentality.)

　Rarely, he didn't tease the quintuplets, let alone complain that Nakano Wuyue ate too much. On the contrary, Yi Lingyuan added a piece of beef tongue to Nakano Wuyue as a sign of encouragement.

　As usual, I casually found a shady long coat in the courtyard and rested for a while.

　When the bell rang for the end of the lunch break, Yi Lingyuan took her pencil case and rushed to the Chinese test site again.

　Things like Chinese exams have always been mysterious.