Xueba: The Knowledge I Teach, The Crit Is Returned

Linhai University, Room 201, Building 4, Teaching Building.

on the podium.

An old professor with black-rimmed glasses was emphasizing the discipline of the exam room:

"Dear classmates, although this is not the beginning of the semester, I still want to emphasize the discipline of the exam room. One: You can't talk to each other, let alone talk during the exam; Two: You can't plagiarize, you can't plagiarize, you can't plagiarize. Three: There is no special test during the exam. The reason, can't go to the toilet..."

After drinking the wolfberry tea in the thermos cup, the old professor continued: "I know that some students have prepared small notes and wished to have a chance to glance at them. Here I persuade these students to give up this idea."

Hearing the old professor's words, Li Xiongfei, who was sitting in front of Gu Bai, immediately clamped his legs.

Some other students who were preparing small notes also had their hearts thumping faster.

"Your sister...why are you so strict!"

Some students complained in a low voice.

Obviously, the invigilating professor at the podium this time gave them enough pressure.

Gu Bai smiled indifferently.

His grades were alright in the first place, but now he has the blessing of System Mathematics LV4, this exam is only for him to play.

Stretching, bored waiting for the students in front to pass the test papers.

"It's too difficult, this test is definitely tricky." Li Xiongfei in the front row handed the test paper to Gu Bai and complained in a low voice.

After receiving the test paper passed by Li Xiongfei, Gu Bai wrote his student number, name, and professional class, and glanced at the questions casually, a little puzzled.

Is the test paper difficult?

Can't see it.

After that, Gu Bai picked up the black signature pen and started to write quickly.

It is difficult to know only by writing.

The first type of questions in the test paper are multiple-choice questions. The first sub-question is a typical function f(x)lim to find the limit. The result is obviously B when x tends to infinity and x tends to 0 respectively.

The second question, which examines the clamping criterion, does not even need to be calculated.

The third question about the spatial coordinates of the spatial coordinate system was a little bit in the mind. Gu Bai checked C.

As for the fourth question, which is simple function calculation, it is purely a sub-question. Using scratch paper is disrespectful to these two questions.

The last question of the multiple-choice question is a bit convoluted. Let ∑ be 0=z=1 on the surface x2+y2=R2(R0), and find the value of ?e√x2+y2sin(x2+y2)ds.

em...

Gu Bai's brain worked a little, and he had an answer in his heart.

This question looks scary, but in fact it is to examine the combination of the student's space surface and equations. As long as you master some methods of solving equations for space curves, the final thing is nothing more than calculation.

Is the equation calculation of this degree not enough?

"It is estimated that Li Xiongfei read it wrong, and the test paper is not too difficult."

"Or it's rare to be behind."

Gu Bai didn't dare to be careless. After completing the multiple-choice questions, he began to prepare to break through the following questions.

However....

The difficulty of the next question paper... made Gu Bai stunned, he did the last question without any stuck.

"Is it that difficult?"

Gu Bai thought suspiciously. After writing the last question, Gu Bai looked around, he was really afraid that he had taken the wrong test paper.

"Don't whisper."

But at this time, the professor on the podium coughed and reminded Gu Bai, who was startled.

He wasn't going to plagiarize, he just wondered if the test paper was wrong.

After waiting for a while, Gu Bai thought about it and left it alone. It is not his responsibility to send the wrong test paper.

Fortunately, Gu Bai walked towards the podium with the test paper and handed it in.

"Don't think about it anymore, I'll give up." Seeing Gu Bai handing in the papers, the old professor who was sitting next to him asked with some dissatisfaction, holding up his black-rimmed glasses.

"Don't think about it." Gu Bai paused, and wanted to ask the professor if he took the wrong simple test paper, but he gave up after seeing his attitude.

As for checking, it is not required.

If this question still needs to be checked, then... Gu Bai could have been hit with the head.

"Well, let's go." Hearing Gu Bai's answer, the old professor shook his head in disappointment.

"Oh." Putting the test paper on the table of the podium, Gu Bai picked up the schoolbag at the door and left.

Before the exam, Gu Bai received a message from senior Wu Hai, saying that he would go back to school today to look at his graduation thesis.

Gu Bai just took advantage of this time to find senior Wu Hai, and also collected the 800 yuan for his hard work.

"Hey~~" Watching Gu Bai leave, the old professor sighed and reminded the students who were still taking the exam: "This time the exam paper was taken from the mathematics department, so it was indeed a little more difficult, but... .. students can't just give up like this."

"It's still 100 minutes before the exam, what a pity to give up like this, isn't it?"

The last rhetorical question, he deliberately said it to the students in the class who were still writing exam papers.

Slowly getting up, the old professor put the thermos cup in his hand on the podium.

Suddenly, the lonely exam paper on the podium full of answers made him stunned for a moment.

Is it finished?

It's only 20 minutes before the exam.

With doubts, the old professor picked up Gu Bai's test paper and began to read it.

"BDCDA, it's rare that it's not scribbled, the multiple-choice questions are all correct."

The old professor was a little surprised, because he wrote this test paper, so he was very clear about the answer.

Without stopping, he continued to look down at the fill-in-the-blank question.

The first question (-2π, √2) is correct.

The second question is also correct.

Question 3...

As the old professor looked down, the expression on his face changed from suspicion at first to surprise, and even a touch of shock at the end.

He did not expect that this test paper turned out to be a full score test paper.

He wouldn't be so surprised if it was just a full score test paper. The most important thing was that this test paper was the one the student completed in 20 minutes.

Got full marks in 20 minutes?

This... I'm afraid some graduate students in mathematics departments can't do it.

"Interesting, really interesting."

"A non-mathematics student can have such talent."

The old professor unconsciously showed a smile on his face, he hadn't seen such a genius for many years.

As for Gu Bai cheating, he can completely rule out the possibility.

One is because he personally invigilated the exam, and the other is because he printed the test paper himself this morning.

After reading the questions of the test paper, the old professor turned his attention to the column of names.

Name: Gu Bai

student ID:**

Major: Nonwovens and Engineering

"Gu Bai, nice name."

"I remember you."

The old professor's face showed a touch of strong interest.

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