I really don't want to lie down and win

Xu Mang quickly put away his smile and put on an appearance of listening to the class seriously.

soon,

Finally, when it was the break in the middle, Xu Mang slipped away to the toilet, but when he came back, there were three or four groups of people in the classroom.

"what's going on?"

"Could it be that the class was too boring and the students fainted?" Xu Mang hurriedly joined in with the mentality of eating melons. It turned out that everyone was discussing the topic, and it was also... the professor was about to test the results of the students.

Attend class,

The students returned to their seats.

The professor in front of the podium asked: "Who solved the problem the day before yesterday?"

words fell,

Only three or four people raised their hands here and there, and they were all from the Department of Mathematics.

Faced with this situation, the professor didn't have any complaints. After all, the difficulty is there. If all of them are solved, it doesn't mean that there is a problem with his level.

"Little money."

"Tell me about it," the professor said to a student.

Then,

The classmate named Xiaoqian walked to the podium, inserted the USB flash drive to open the file, and began to explain his problem-solving process.

"here..."

"There..."

Xiao Qian's classmate spoke with flying colors, and the students below also listened carefully, but Xu Mang was the only one with a confused and at a loss face.

What is he doing?

Why can't I understand?

OMG!

Is it because my business ability is not working anymore?

Don't say it...Xu Mang really couldn't understand what he was talking about. The logic was chaotic and the process was so complicated that it was outrageous.

10 minutes later,

The classmate Xiaoqian finally finished speaking, and then applauded, and Xu Mang also applauded. Although he didn't know what happened just now, he should respect the fruits of other people's labor. This is a matter of politeness.

The professor had no expression on his face, and immediately called the next classmate, and then another, and the same...

Xu Mang: ￣￣;

This... what's the situation?

in fact,

The answers of these people are all correct, but almost everyone has gone around a big circle and solved this problem in a very complicated way.

A bit time-consuming and laborious.

as predicted,

The professor said: "The answer is correct, but the process is problematic and not streamlined enough."

Subsequently,

The professor began to analyze this power series convergence problem for everyone present.

"First of all, don't be blinded by the title." The professor said: "In the future, you will encounter many such situations. It seems that the power series convergence problem is actually another problem, but you will find out when you do it. , the final answer comes back to the convergence of the power series.”

"..."

"..."

"..."

professor,

You made it a little easier!

This is obviously a fusion of various elements in it, and once it goes in, it can't get out at all.

For the next 10 minutes,

The professor analyzed the pitfalls of this question and the things that need to be paid attention to in great detail. Xu Mang and the professor have the same opinion on this. All the problems lie in these points. As long as you straighten out your logic, you can almost solve the problem. .

It seems...

I don't need myself today.

however,

Things were far from as simple as Xu Mang imagined.

Subsequently,

The professor began to solve the problems for the students on the spot. In the previous steps, there were no surprises, almost the same as Xu Mang's, but at a very critical point, Xu Mang found that there was a problem in the professor's problem-solving process.

Wrong is not wrong,

It just gets tedious later on.

really,

After a problem occurred in the middle, the professor's problem-solving process was redundant, and there were about... seven steps that were redundant.

In fact, this was already a standard process, but for Xu Mang, it could be simplified and made more perfect.

"The whole process is like this." The professor finally wrote an answer and said blankly: "This question requires attention to logical thinking, and to find the corresponding balance point in each key transformation."

"All right."

"Down..."

The professor was about to finish class when he was suddenly interrupted by a student.

"professor!"