"Hey, is the system there? Can you come out and explain? ”

"If you don't come out again, I'll give you a bad review!"

……

Ma Tian tried for a long time as if he was a psychopath, and found that the system didn't bring birds to him at all, so he still sat on the stool and gave up.

Looking at the mathematical formulas in the paper, Ma Tian took a deep breath:

Made, this is forcing me, "Deep Blue, add a point!" ”

Ma Tian continued to click on the "+" sign behind Mathematics Lv1, and he guessed that his mathematics level was not enough to understand the paper.

As a bright light flashed in his mind, Ma Tian found that he had more knowledge in his mind, such as real analysis, algebra, topology, and differential geometry.

After calming down, Ma Tian continued to look at the paper "Exploration of Improving Positioning Accuracy Based on Mixed Theory Theory".

Sure enough, after this time, he was able to continue watching.

……

where x₀ = C₀B - cosB(C₁sinB + C₂sin³B + C₃sin⁵B + C₄sin⁷B), t = tanB

N = a / (1 -è²sin²b)1/2, η² = è² cos²B, è is eccentricity

……

where B is the geodetic latitude of the projection point, and x₀ is the projection from the equator to the ground point P on the reference ellipsoid......

After half a ring, Ma Tian was silent again, because he could still only understand half of it, and could only silently click the last "+" sign of mathematics.

Math directly becomes Lv3 (0/100000).

Now it's okay, all the + signs of taxonomy are gone, and Ma Tian directly iterated the knowledge transmission for 2 minutes in his mind, and he finally understood the paper.

In short, this paper is an algorithm based on chaos theory that aims to solve the problem of cryptographic positioning.

Of course, this paper is just a theory, but Ma Tian suddenly found that there are a lot of ideas in his mind, such as seeing this algorithm, he thinks of some application scenarios, such as satellite positioning, map navigation and so on.

This couldn't help but make Ma Tian ponder, did the addition of mathematics to Lv3 make his head flexible? If that's the case, it's not a loss to add all the math points.

patting his buttocks, Ma Tian, who was in a good mood, began to plan his future.

First of all, I am sure that this paper is very valuable, he can directly use it to publish the journal, remember that the school is a reward for the person who publishes the top journal, in case this paper is on nature, then his university money will not have to worry?

So, the first thing to do is definitely to find a way to get this paper published.

The second thing? Of course, it's a matter of solving hunger, and I'm fascinated by reading papers, and I'm almost ready to eat if I'm not careful.

Wait, Ma Tian suddenly realized that he was still a poor bastard.

That's right, it's a freshman, and he was born as an orphan, living on the school's subsistence allowance of 500 yuan every month.

"No, it takes a long time for the paper to be published, and the school is very slow to make money, so you must find a way to make money first after eating!" Ma Tian muttered.

has been working for more than ten years, and now he is suddenly allowed to live a life of help from others, even if it is the help of the school, Ma Tian can't stand it.

casually coped with a mouthful of food in the cafeteria, Ma Tian thought about ways to make money.

"What can I make as an undergraduate right now?" Ma Tian pondered.

Food delivery? Handing out flyers? Shaking his head, Ma Tian abandoned these thoughts, which was too embarrassing for the traverser. It's not that Ma Tian can't endure this hardship, he has suffered everything, but he can't improve himself by suffering these hardships, and the cost performance is not high!

After thinking about it, Ma Tian suddenly found that even if he was reborn, with his current ability, he didn't seem to have any ability to make money quickly.

No one wants to continue to work in a company, and first-year undergraduates don't want you.

And they are all reborn, and it is too embarrassing for the system and readers to work for others again.

There's no way, Ma Tian can only look at his system again, copy out the paper first, and then see what the impact value is, doesn't the system say that the influence value can affect everything about him?

What if this thing can be redeemed for money?

Just do it, Ma Tian went directly to the school's electronic reading room and borrowed the school's computer, the white prostitute is that he is right, who let him not afford to buy a computer!

Finding a vacant seat, Ma Tian sat down and began to write his thesis.

Until he was reminded by the aunt of the administrator of the electronic reading room: "Classmates, it's time, come back tomorrow!" ”

It turned out that before he knew it, it was already 9 o'clock in the evening, and the electronic reading room was closing.

"Ah, Auntie, I'm sorry, I'll save the file to my USB flash drive now, pack up my things and leave immediately!" Ma Tian said embarrassedly.

"Hmm!" The aunt in the electronic reading room nodded, but she was also more tolerant of students who love to learn.

Ma Tian, who saved the unfinished paper and poured it into the USB flash drive, left the electronic reading room.

When I returned to the dormitory, my roommates were basically there.

Ma Tian has three roommates, one is Ji Leiming, who called him to class in the morning, played better with him and often went to and from class together.

One is Ni Zhiquan, a young man who loves love, and is immersed in his own games and music every day with long hair and big headphones.

The last one is Weng Xianguang, a nerd, who either reads books or is on the way to read books every day, and is quite disdainful of the other three people in the dormitory, keeping a distance.

Ni Zhiquan and Weng Xianguang said that they were roommates, but they didn't play much with Ma Tian and Ji Leiming.

Seeing Ma Tian come back, only Ji Leiming said hello and asked, "Brother Ma, where have you been?" I'll put your campus card on the table for you! ”

"I went to the electronic reading room to get some information." Ma Tian replied simply.

"Oh!" Ji Leiming didn't ask much, Ma Tian didn't have a computer, and he often went to the electronic reading room to get information.

The bedroom was a little silent for a while, Ma Tian tidied up the table under the bed, and when he saw the high math book, he had an idea.

Directly took the book and walked to Ji Leiming, who was chatting on QQ.

"Brother Ma? Something? ”

"It's nothing, just ask you, where is the current high math talk?" Ma Tian replied.

Ji Leiming: "Now we talk about derivatives and differentiation!" Brother Ma, do you have any problems that you won't have? ”

Ma Tian: "No, I mean if you can't, I can explain it to you!" ”

"Ahh

He also sneered at Weng Xianguang on the bed, and continued to look at the question, probably thinking that today's Ma Tian was really funny.

"Brother Ma, are you serious?" Looking at Ma Tian with a serious face, Ji Leiming confirmed again, seeing that Ma Tian nodded, he could only open the book and point to an exercise behind him, and cooperated, "I won't know this question!" ”

Ma Tian looked at the topic:

Let x = √(t² + 1) and y = ln(t + √(t² + 1)), find the value of d²y/dx²|t = 1 as ——

This question is too simple, Ma Tian picked up the pen and paper on Ji Leiming's desk, and directly wrote out the steps in detail, explaining while writing:

The first method is to find dx/dt first, then dy/dt, then (dy/dt)/(dx/dt) to get dy/dx, and finally find the quadratic differential.

The second method is to replace t with the expression of x and bring it into the second formula, so that y = ln(√(x²-1)+x), then dy/dx, and finally the quadratic differential.

The final formula for both methods is d²y/dx²=-(1/t²)(√(1+t²)/t), and t = 1 is substituted, and the final result is -√2.

Ji Leiming looked at Ma Tian in a daze, and felt that Ma Tian was very strange for a while.

Ma Tian sank into the data panel in his mind, found that the impact value was still 0, and wondered: "Ji Leiming, do you understand?" ”

Ji Leiming nodded frantically.

"Do you really understand?"

"I'm sure I understand, Brother Ma!"

"Strange!" Ma Tian returned to his seat with doubts, can't teaching others math get the impact value of the system? How should the system be opened?