Xueba: The knowledge I taught will be returned by crit

Linhai University, Classroom 201, Building 4.

On the podium.

An old professor with black-framed glasses is emphasizing the discipline of the examination room:

“Dear students, although this is not the beginning of the final semester, I still want to emphasize the discipline in the examination room. One: can’t turn heads and ears, let alone talk during the exam; Two: no plagiarism, no plagiarism, no plagiarism. Three: You can’t go to the toilet without special reasons during the exam…”

After drinking the goji tea in the thermos cup, the old professor continued: “I know that some students have prepared small notes, vainly thinking of having the opportunity to glance at them, and here I advise these students to dispel this idea. ”

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

Some other students who prepared small notes also had their hearts plop faster.

“Your sister’s… How is it so strict! ”

Some students whispered.

Obviously, this time the proctor on the podium put enough pressure on them.

Gu Bai smiled indifferently.

His grades were originally okay, and now he has the blessing of the LV4 level of systematic mathematics, and he should only come to play this exam.

Stretched out, bored waiting for the classmates in front of him to pass the test paper.

“It’s so difficult, this exam is definitely tricky.” Li Xiongfei in the front row handed the test paper to Gu Bai and complained in a low voice.

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

Is the test paper difficult?

I can’t see it.

After that, Gu Bai picked up the black signing pen and began to write quickly.

Is it difficult to know only if you write it.

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

The second question examines the pinch criterion without even having to calculate.

The third question of the spatial coordinate system to find the spatial coordinates, a little in the brain, Gu Bai checked C.

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

The last question of the multiple-choice question is a bit winding , and let ∑ 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 operated a little, and he had the answer in his heart.

This question looks quite scary, but in fact, it is a combination of studying students’ space surfaces and equations, as long as they master some methods of solving equations of space curves, the end is nothing more than calculation.

Is this level of equation calculation, not just a hand?

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

“Or maybe it’s all behind.”

Gu Bai did not dare to be careless, and after completing the multiple-choice questions, he began to prepare to break through the following questions.

And yet…

The difficulty of the next question paper… Gu Bai was stunned, and he did the last question without any jams.

“That’s how difficult?”

Gu Bai thought a little suspiciously, after writing the last answer question, Gu Bai looked left and right, he was really afraid that he had taken the wrong test paper.

“Don’t turn your head and ear.”

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

He was not prepared to plagiarize, he just wondered if the test paper was taken wrong.

After waiting for another moment, Gu Bai thought about it and simply didn’t care, it was not his responsibility to send the wrong test paper.

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

“Stop thinking about it, this is giving up.” Seeing Gu Bai hand over the papers, the old professor sitting on the side held up the black-framed glasses and asked with some dissatisfaction.

“Don’t think about it.” Gu Bai paused, and wanted to ask the professor if he had taken the simple test paper wrong, but he gave up when he looked at the attitude.

As for the inspection, it is not needed.

If this topic is still examined, then… Gu Bai simply crashed to death.

“Well, go ahead.” Hearing Gu Bai’s answer, the old professor shook his head with some disappointment.

“Oh.” Placing the test paper flat on the table of the podium, Gu Bai picked up the bag 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 see his graduation thesis.

Gu Bai just took advantage of this time to find Senior Wu Hai, and also charged the 800 yuan of hard work by the way.

“Hey~~” Watching Gu Bai leave, the old professor sighed and reminded the students who were still taking the exam: “This time, the test paper is indeed a little more difficult because it was taken by the mathematics department, but… Students can’t just give up. ”

“It’s 100 minutes before the exam, so it’s a shame to give up like that, right?”

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

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

Suddenly, the lonely test paper on the podium full of answers made him stunned.

Actually finished writing?

It’s only been more than 20 minutes since 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 scrambled, the multiple choice questions are all correct.”

The old professor was slightly surprised, because this test paper was produced by him, so he was very clear about the answer.

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

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

The second question is also done correctly.

Third question….

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

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

He would not be so surprised if it was simply a perfect score, the most important thing is that this paper took the student 20 minutes to complete.

20 minutes to get a perfect score?

This… I’m afraid some graduate students in the Department of Mathematics can’t do it.

“Interesting, really interesting.”

“A non-mathematics student can have such talent.”

The old professor unconsciously had a smile on his face, he had not seen such a genius in many years.

As for Gu Bai’s cheating, he could completely rule out this possibility.

One is because he personally proctored the exam, and the other is because he personally printed the exam paper this morning.

After reading the question of the test paper, the old professor looked at the name column.

Name: Gu Bai

Student ID: **

Major: Nonwovens Materials and Engineering

“Gu Bai, good name.”

“I remember you.”

The old professor’s face showed a deep interest.

…………………………………..

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