God of black technology

The invigilator looked serious, put the file bag behind the podium, cleared his throat and said, "Before the official exam, I have one thing to say."

All the candidates present looked at the invigilator, and even the candidates who had been making noise did not speak.Just like that, he looked straight at the invigilator.It can be seen that the invigilator himself is a little numb psychologically.He coughed again, "Don't look at me like that, I'll talk about it while handing out papers."

Then he muttered, "It wasn't a big deal at first." He opened the file bag, took out the test paper, and took out the draft paper.

While asking the students sitting at the front to send it, he said loudly, "Because the school is going to prepare an event tonight, so after today's math test, everyone can go home. But——"

Before the invigilator finished speaking, the group of candidates cheered.Taking advantage of the confusion, Cheng Cheng turned his head to look at Wang Yun and said, "You can copy the paper for me later."

"???" Wang Yun was still confused. After saying this, Cheng Cheng turned his head.

"Quiet, quiet!" the invigilator glared at the candidates in the whole classroom, and said viciously, "Although you don't have to take the exam at night, the subject of the exam tomorrow morning is still English. Remember, you have to go home to review at night." Obviously. , When he said this, the invigilator was also very unconfident.This group of students will review, nonsense.

"Okay, the exam has already started." The invigilator raised the watch on his wrist, looked at the time, and shifted his gaze to the group of students who were going to have a carnival, "If you continue to make trouble like this, I will let Xu The director is here to invigilate your exams."

Seeing that he could no longer control this group of students, the teacher had no choice.I had no choice but to move Director Xu out, not to mention, usually after they came out, the group of students completely turned off the fire and stopped talking.

When Cheng Cheng put the test paper on Wang Yun's desk, he still reminded him, "Remember to copy it for me."

Isn't this guy not afraid of his parents?Why are you suddenly copying papers again?

Really do not understand, Wang Yun shook his head, carefully looked at the topic.

The first question is about collections.Simple, he didn't need to calculate at all, and after looking at the question directly, he chose A.

Then there was a question about infinitives, which was also very simple, and I chose C.

…………

The previous questions were not difficult, and he quickly finished the previous questions.But when it came time to answer the question, he was stunned.Unexpectedly, it turned out to be so explosive.

The power function, Mr. Chen has not talked about this at all.Almost all let them preview the power function, exponential function and logarithmic function by themselves.

[The function f(x) defined on R is an odd function with a minimum positive period of 2, and when x∈(0)...

(1)求f(x)在[-1，1]上的解析式;(2)证明f(x)在(0，1)上时减函数;(3)当λ取何值时，方程f(x)=λ在[-1，1]上有解】

He was still pondering, Cheng Cheng turned his head to look at Wang Yun, lowered his voice and said hoarsely, "Show me."

Glancing at Cheng Cheng, he sighed.He spread out the math paper so that Cheng Cheng only needed to turn his head to see it.Then, he ignored Cheng Cheng, looked at the big question, and began to think.

After writing on the draft paper for a while, this was written on the answer sheet.

[1. Solution: When x∈(-1), -x∈(0).∵When x∈(0)...∴f(x) is on [-1] The analytical formula is...

2. ... Therefore f(x) is a subtraction function when it is on (0, 1);

3、在[-1，1]上使方程f(x)=λ有解的λ的取值范围就是函数f(x)在[-1，1]上的值域.当x∈(-1，0)时……方程f(x)=λ在[-1，1]上有解】

Ah, is this the pleasure of being able to make a title in the legend?That hearty feeling is indeed the most exciting to solve problems!

With a 'click' sound, the pen in Cheng Cheng's hand fell directly to the ground.

"???" Wang Yun glanced at Cheng Cheng, then looked at the big question behind, and continued to work.

[Solution: From 2x－1≠0, we get x≠0,

∴ The domain of the function is {x|x≠0, x∈R

...]

What the hell?What about the worst academic performance, and zero marks in the math test?Cheng Cheng was stunned. He felt that he had been cheated of his feelings, which was too uncomfortable.

We agreed to be scumbags together, but you secretly became a god!Looking at the dense formulas and calculated answers on the paper, Cheng Cheng had a feeling: who am I, where am I, and what am I going to do.

This is so... still playable?

Scumbag!snort!Even if I, Cheng Cheng, died here today, even if I jumped off the teaching building, and my parents broke my legs, I wouldn't copy your formula from Wang Yun... It's so sweet!

"That boy in the penultimate row on the far right, what are you looking at?" The invigilator frowned and stood up.

Cheng Cheng was stunned for a moment, turned his head, and the invigilator said sternly, "During the exam, you are not allowed to whisper. You two, one is the last one in the grade, and the other is the second last one in the grade. What can you copy from each other?"

"Pfft ha ha ha..." There was a burst of cheerful laughter in the classroom.

Wang Yun ignored the laughter, he was really stumped by the last big question.

The last big question, worth 20 points, is not bad from what he guessed.But he is more inclined to extracurricular knowledge, which has touched his knowledge blind spot.

The invigilator just sat on the podium and watched. After a while, he saw the boy in the penultimate row turn his head to peek again.But the person sitting in the last row didn't seem to pay attention to him, but was thinking about something frowningly.

He felt that this matter was not as easy as it seemed on the surface.

Is it school violence?still……?Seeing the tall boy keep turning around, the invigilator did not know how many things he had imagined.Stand up and walk quickly towards the end.Standing beside Cheng Chengdi, he glared at Cheng Cheng and said, "What's interesting in the back? Is there a movie, or is there an answer?"

Of course... there is an answer.Cheng Cheng complained in his heart, but still made a obedient expression, buried his head, and continued to look behind without turning his head.

The invigilator had sharp eyes. Before Cheng Cheng turned his head, he saw that the students in the last row were fast enough to answer the last question.I'm thinking hard, so fast?Random?The invigilator was stunned for a moment, then stood beside Wang Yun.

First of all, people are curious, he wants to see if this guy is writing nonsense or is really doing the problem down-to-earth.Secondly, he also wanted to know why the big guy in front had to turn his head to look behind him.

The first answer that caught his eyes was the first answer. Although the wording was a bit ugly, he had already seen the math question just now.The last student's answer was very standard, almost exactly the same as the standard answer.Of course, there is no possibility of him plagiarizing the standard answer, because this paper was filled in bit by bit by the teacher in the mathematics group of the first year of high school during the Mid-Autumn Festival.Although they have all done it, and gave a standard answer.

But the time to give the standard answer is at noon today, sitting in the last examination room, the students in the last position have no possibility of accessing the standard answer.

Looking at the second big question, he breathed a sigh of relief.Sure enough, it is not a standard answer. Although the answer is correct, there are many steps. After going around a few times, there are obviously some cumbersome steps.However, these steps are impossible to reduce him points.

Wait... Four big questions, three big questions are correct.So isn't the previous question... Thinking of this, the invigilator finally knew why the guy in front kept turning his head and looking behind him.It's really plagiarism, no, why is there such a good student in the last examination room?

Even if he didn't get the last big question right, this guy should be within the top [-] for his age.

You know, there can be more than 300 students in the top class.In the top [-] in the grade, after three years, it is difficult to pass the exam, but it must be safe to pass the undergraduate exam.

With this level, why did you come to the worst exam room?Poverty alleviation?

Poverty alleviation is not so good. When Director Xu stuck his head out of the classroom, the invigilator was still looking at Wang Yun's answer.

That's right, there's nothing wrong with that.Everything above is correct. 130 points is almost a sure thing.

A strong student... Wait a minute, I'm a teacher!

"Ms. Lin!" Director Xu called out from outside the door, but Wang Yun still didn't raise his head, but was thinking to himself.Teacher Lin turned his head and happened to see Director Xu outside the door.So he couldn't hold back and said, "Director Xu, wait!"

Cheng Cheng gave a 'thud' in his heart, and thought to himself, he wouldn't be so unlucky, would he?Not long after you started plagiarizing, you were informed by the teacher?

Director Xu was also stunned for a moment, seeing Mr. Lin standing beside Wang Yun.I thought to myself, is there something wrong with this guy?

Teacher Lin walked out of the classroom, looked back and said, "Don't plagiarize me, and don't whisper to me. I will see it later, and the exam will be treated as zero."

Director Xu is even stricter than Teacher Lin, "Let me say a few words to Teacher Lin, and when I see any bad behavior from you, I will make a demerit!"

"..."

Facing Director Xu, the students did not dare to resist.

Standing in the corridor, Director Xu asked, "What's wrong with Mr. Lin? Is there something wrong with the last candidate?"

Teacher Lin nodded and said puzzledly, "Director Xu, how did you arrange the examination room?"

"Huh?" Director Xu was dumbfounded by Teacher Lin's words. How did you arrange the examination room?Listen, what are these words!

"Mr. Lin, what's the problem?"

"Behind the bottom one in the grade, there is a math classmate with almost a high score. What do you think?" Of course Director Xu will not arrange the exam room this time, but in such a special situation, it can only be Director Xu.

"Huh?" Director Xu became more confused the more he listened, "Mr. Lin, what are you talking about?"

Teacher Lin took a deep breath, and then said, "That's Wang Yun. I looked at his math test paper, except for the last big question, full marks! Of course, some test marks will be deducted, that's for sure. Even if he didn't solve the last big question, it is undeniable that he can score more than 120 points in this subject of mathematics, so it is impossible for him to be in the last examination room."

"Director Xu, are you preparing to help the poor students?" Teacher Lin finished speaking in one breath, leaving Director Xu silent for a long time, stunned on the spot.