Cheng Nuo stared at the computer screen for a while, his brows furrowed slightly.

He turned his head and looked at the short-haired girl beside him, "Classmate, what kind of major are you?"

The short-haired girl stroked her sideburns, smiled slightly, and showed a whole row of white teeth, "Let me introduce myself, my name is Yuluo, majoring in civil engineering." ”

Construction...... Engineering?!

The corners of Cheng Nuo's mouth twitched violently.

Girl, you're doing something!

Originally, among the people Cheng Nuo knew, Ying Yingying, who learned welding, had already made Cheng Nuo feel incredible.

But this one in front of me is good, it turns out that I studied civil engineering, this ......

Civil engineering!

As the name suggests, this major seems pretty awesome. But in fact...... More than half of the students who come out of this major go to the construction site. Even college students who have graduated from Tsinghua University will not be exempt from the slightest.

A young girl, but stays at the dusty construction site every day, no matter how you think about that scene, it makes people feel sorry.

Seeing that Yu Luo seemed to know what Cheng Nuo was thinking, he explained with a smile, "Actually, our profession does not mean that there is no way out except to go to the construction site. ”

"I'm currently interning at a design institute in Kyoto, and I'm doing pretty well. If nothing else, you should be admitted directly after graduation. ”

Hearing this, Cheng Nuo couldn't help but glance at Yu Luo.

As far as he knows, most of the design institutes recruit graduate students majoring in civil engineering, and as for being able to go to the design institute for internship at the undergraduate level, and hearing Yu Luo's tone, it is almost a sure thing to be retained, such students are definitely a very small minority.

Working in a design institute is to sit in an office and do simple design and other things. Compared with going to the construction site, it is not too pleasant.

Tsinghua University, sure enough, is the Hidden Dragon Crouching Tiger!

Cheng Nuo once again had a deep understanding of this sentence.

Unexpectedly, the female classmate I met casually was a big guy who would work in the design institute in the future.

"So, this you showed me should be your graduation thesis, right?" Cheng Nuo pointed to the computer screen and spoke.

Seeing Yu Luo nodded slightly, "Hmm." Half-finished products are not considered graduation theses. ”

She lowered her head, manipulated the mouse, called up one of the dozens of pages of papers, and smiled at Cheng Nuo, "Cheng Nuo, I see that you have been watching matlab programming just now, right?"

Cheng Nuo nodded.

"You just said that you can use it completely?" saw Yu Luo smile and groaned.

"That's right. Two hours to learn MATLAB software was completely enough for me. Cheng Nuo pretended to be a force.

"......" pretended to be forced with Cheng Nuo from time to time, and seeing that Yuluo said that she was not very adaptable, she looked at Cheng Nuo and said loudly, "So, classmate Cheng Nuo, the time has come to test your learning results!"

Seeing Yu Luo, he directly pushed the laptop in front of Cheng Nuo this time.

"You should be able to use MATLAB to program the algorithm for this problem, right?"

Seeing Yu Luo looking at Cheng Nuo with a gaze that was not very convinced.

In a questioning tone?

Cheng Nuo felt that his self-esteem as a top student had been insulted.

Cheng Nuo didn't look at the question directly, and smiled confidently, "No problem." ”

After speaking, Cheng Nuo turned his gaze to the computer screen.

Seeing the topic of Yu Luo's graduation thesis, Cheng Nuo glanced at it before and had a general guess.

If Cheng Nuo's guess is correct, it should be about the design and analysis of structures in civil engineering.

And see the page that Yuluo asked Cheng Nuo to see, the content contained is a not small branch of design analysis.

That is, "the problem of solving the internal forces and displacements of the structure when the structure is applied by static and dynamic loads".

By analyzing mathematical equations, MATLAB algorithms are programmed and solved.

It's a complicated process.

The mathematical knowledge involved in it is enough to make Jianyuluo, a civil engineering student, desperate.

Originally, according to the plan of seeing Yuluo, he was going to go to the mathematics academy to ask for help from a junior who had experience in participating in modeling competitions.

However, since I met Cheng Nuo today. Naturally, whether it succeeds or not, there is always nothing to lose by letting him try.

It just so happened that Yuluo wanted to test whether Cheng Nuo had really achieved mastery from zero to MATLAB in less than two hours.

"How is it, is it difficult?" Half a minute later, seeing Yu Luo see Cheng Nuo's realization move away from the computer screen, looking at his slightly gloomy face, he couldn't help but ask worriedly.

Cheng Nuo nodded, "Indeed, it's a little difficult. ”

Cheng Nuo is telling the truth.

I am afraid that Yuluo did not know how complicated the mathematical operation of "the internal forces and displacements of structures under static and dynamic loads" was, so she fearlessly added it to her graduation thesis.

From the perspective of Cheng Nuo, who is barely a mathematical professional, in order to be completely accurate in this data, it is necessary to construct quite complex operational equations.

Then, the equations are converted into MATLAB code.

"Yours needs to deal with the problem of solving and the convergence of nonlinear equations in finite element programs, as well as the problem of determining the coordinates of two-dimensional primary four-node elements. Cheng Nuo opened his mouth to explain, "If you use the method of subfunction to solve it, then ......"

Cheng Nuo said a lot of things, and he was stunned when he heard Jian Yuluo on the side.

What did he say?

Why is it that it is my thesis, but it feels completely unfamiliar?

I don't understand it, but I feel like it's so troublesome?

Seeing that Yu Luo's mind was confused, he asked in a weak tone, "So, isn't it okay?"

"Okay!" Cheng Nuo nodded heavily, he patted his chest and said with a smile, "Although it is troublesome, for me as a scholar, I can still do it." ”

"That'...... How much time does it take?"

"One...... Oh no, half an hour, that's enough!"

An hour is too long,

For Cheng Nuo, a person who only seizes the day, half an hour is even long-lasting.

"By the way, do you have MATLAB on your computer?"

"Yes, yes, here. ”

"Okay, then I'll get to work. ”

"Then I'm ......"

"Whatever you want. Just come and get the program in half an hour. ”

After speaking, Cheng Nuo lowered his head and took out a stack of scratch paper from his schoolbag.

First, establish the algorithm equation.

f(x)=ax^e^n......

............

Cheng Nuo spent more than ten minutes and passed more than a dozen equations to get the algorithm equations required for MATLAB programming.

Then, open MATLAB and enter the code.

Cheng Nuo tapped the keyboard with both hands, and the code was as if it was written in his head.

clear

v：sym(’[1，X，Y，X Y]’)；

m=sym(’【1，xl，yl，xl yl；x2，y2，x2 y2；1，

x3，y3，x3 y3；1，x4，y4，x4 y4]’)；

mm=inv(m)；

d=v mm

simplify(factor(d))；

............