Seeing that the boy opposite fell into silence and thought, a little pleasure flashed in Qi and Mo's eyes.

This problem is not the partial reciprocal in their upper math this semester, but the second-order partial differential equation (PDE), also known as mathematical physics equations.

It is compulsory for many science majors to be a sophomore or more, or an elective for a junior or higher in engineering.

Of course, lacquer and ink have not yet been learned.

No matter how studious you are, you have to have a degree, right?

So she just wanted to embarrass this boy - aren't you a good teacher? Then try the super-outline puzzle.

……

As the boy's brow furrowed deeper and deeper, the paint and ink became more and more ......

Happy!

But in the midst of her happiness, she was a little worried......

You won't go too far, will you?

Then she saw ......

The boy pulled down his mask, took a sip of water, rolled up his sleeves, and then wrote on the manuscript paper......

Untie:

Let u(x,t) = X(x)T(t).

X(x),T(t) satisfies the ordinary differential equation: X"(x)+λ2X(x)=0 T"(t)+a2λT(t)=0

The eyes of lacquer and ink are instantly round!

？

……

Ye Ming quickly finished writing a piece of manuscript paper.

Immediately after, he immediately pulled out his manuscript paper, but just as he was about to continue his analysis, he suddenly felt that the girl's eyes were a little wrong.

When I looked up, I saw that the girl's eyes were full of shock and incredulity.

This look made him immediately sober and alert.

This girl is deliberately here to test herself, right?

So he hesitated for a moment, and wrote on the manuscript paper: "Although it takes time to analyze all the solutions, after finding the special solutions, you have to expand the Fourier series, or ...... I'll teach you how? ”

When he was done, he pushed the paper over.

I saw that the girl took the manuscript paper, and her eyes stayed on the manuscript paper for a full ten seconds, and then she exhaled slowly and wrote vigorously.

"Thanks, I'll take a look at the textbook and the video first."

"Oh, that's what I need to say."

After writing, Ye Ming saw that he still had a few steps to find a special solution, so he simply turned over the manuscript paper and directly found a special solution after omitting the analysis step.

Anyway, even if you guess that the girl is deliberately testing herself, but if she does the question, she must have an answer.

After handing the manuscript paper to the girl, Ye Ming smiled at the other party and put on the mask again.

Today, the king of heaven and Lao Tzu can't disturb him to study!

And then...... The phone buzzed.

The caller ID showed Peng Xiaofei's avatar, and Ye Ming unceremoniously hung up the call and clicked into WeChat.

"Come to the Science and Technology Activity Center, there's a fight."

Ye Ming was stunned for a moment, and typed one? Immediately click into the team.

I saw Li Dongsheng @ everyone in the group, and asked everyone in the school to go to the fifth floor of the activity center, their territory was robbed by the RM team, not to mention, and the opposite side also made disrespectful remarks and insulted the team.

Ye Ming's brows furrowed, and he sighed after being silent for a few seconds.

Everyone is civilized...... Fights certainly don't go to.

But to go, you still have to go.

So he reluctantly closed the book and stood up again.

……

Although Lacquer and Ink took over the manuscript paper, their minds were not on the manuscript paper at all.

Her mind was full of what Ye Ming looked like when he was seriously doing the question just now.

Is there really such a great person?

Is he really a freshman?

No...... It should be a freshman......

Because he took off his mask when he was doing the question just now.

Judging by his face, he is not very old.

As for the looks, just ask......

What girl would think that a boy who is serious about solving problems is not handsome?

Just when Qi and Mo were in a complicated mood, she saw that the boy seemed to be leaving.

The heartbeat instantly quickened at this moment.

She hesitated for a moment, then decided to follow her instincts.

She looked at the boy and said the first thing they had ever said.

"Can you add a WeChat?"

……

The science and technology activity center is not far from the library, and Ye Ming has not had time to think about how to say hello to this girl named "Fengxi" on WeChat.

Well, in fact, the more reason is that Peng Xiaofei's guy has been harassing him and reporting the "battle situation" to him.

The current situation is that Li Dongsheng and a vice-captain opposite have a very serious quarrel.

Walking up to the fifth floor, Ye Ming heard Li Dongsheng's voice outside the door.

"Fuck off! It's hard for anyone to come today! ”

"Li Dongsheng, your team is about to be disbanded, what are you doing to make trouble with my brother?"

"Cao Junwen, you are paralyzed!"

Then there were the voices of the two sides fighting......

"Oops, don't do it......"

Ye Ming pushed open the door.

I saw a group of people gathered in the middle of the wide field, and Li Dongsheng and a boy opposite twisted together.

In the field, several barriers were built with various improvised materials, and two mechanical tanks the size of basins were parked in the field.

There are also small acrylic balls the size of soybeans scattered around.

Ye Ming bent down to pick up a small ball and walked towards the crowd.

Then he saw that Peng Xiaofei was holding Li Dongsheng and saying something in the other party's ear, and Li Dongsheng stopped struggling and looked towards him.

"Captain." Ye Ming approached, glanced at the other side first, and then asked softly, "Why did you fight?" ”

Li Dongsheng spat fiercely: "The RM team, originally upstairs was their preparation hall, but it turned out to be not enough, so they came to us and didn't say anything, and they fucking said that we didn't need it." Exercise! ”

"You don't need it! A few schools next door have been preparing for the game for a long time, you haven't moved for a long time, don't say anything, and you have to overhaul the plan, we will have a school league at the end of March, what's wrong with using it first? Yes? What's wrong? The person named Cao Junwen on the other side is not easy to mess with, so he squirted back directly.

"Who says we're not moving? Lao Tzu is going to use it soon. ”

"Pretend, you continue to pretend."

Then the door was pushed open again, and a serious voice rang out.

"What a fuss!"

Everyone looked at the door at the same time, and then suddenly fell silent.

Because it was Professor Chen Xiaofang, the instructor of the RM team, and Teacher Zhang from the Youth League Committee.

One is the leader of the team.

One is the "gold father" on both sides.

No one can afford to mess with them.

……

Five minutes later, the two teachers who had figured out the situation stood in the middle of the crowd and exchanged glances with each other, and Teacher Zhang of the Youth League Committee coughed lightly.

"In this way, although the venue on the fifth floor is for the RC team, now the RM team is in a special situation, and there are two competitions waiting for them. Upstairs, they were preparing for the competition, and they needed a large environment and venue, so the venue for the challenge would not be enough...... At the end of the month, we will have a 3V3 challenge ...... for colleges and universities."

With Teacher Zhang's voice, the expression on Li Dongsheng's face instantly turned red.

Not only him, but every member of the RC team, with indignation written on their faces.

What is this? Pull the bias frame?

Or is it that in the eyes of the school's Youth League Committee, have their gang become outcasts?

"Li Dongsheng." Teacher Zhang is a female teacher, and she sensitively felt Li Dongsheng's resentment and anger, and she frowned: "Don't look like this, anyway, your competition is still early, and it will only start in May." ”

"Teacher Zhang, we really need to prepare for the venue! This year's rules are complex and confrontational, and you need to prepare early. ”

Facing the "gold owner's father" who gave money, even if Li Dongsheng was unwilling in his heart, he held back his anger and begged: "And we are very confident that we will win the award this time!" ”

It's okay if he doesn't say this, but as soon as he says it, the expressions of everyone on the other side become weird.

In the crowd, someone whispered, "If you don't get your head shaved, you'll be Ami Tofu."

Li Dongsheng's face turned red again.

Just then, a voice came calmly from outside the crowd.

"That's it, this time next weekend, we'll get a robot and fight you guys, whoever loses will let go."

Li Dongsheng instantly looked at the source of the voice.

I saw Ye Ming just standing up from the side of one of the tanks.

He also clapped his hands lightly.

"RM masters, do you dare?"