I Just Want to be a Shenhao Quietly

Finally, after analysis and verification, a set of correct models is obtained.

And the most interesting point of mathematical modeling is that there is no so-called standard answer.

For example, using mathematical modeling to make a folding chair, different people will make folding chairs with different shapes.

Although the shape is different, as long as it can be used, you can't say that his mathematical model is wrong.

However, there is no standard answer, but there are good and bad points.

Someone designed a folding chair that is more comfortable and easier to carry, which means that his modeling is better.

In the same way, this question from Dai Pingbo is also the same.

Looking at the questions on the paper, Lin Xian's brain was running fast, and the mathematical knowledge he had learned before kept flashing.

After pondering for a while, Lin Nao suddenly had an idea.

The essence of this question is actually to study the law of the falling speed of an object changing with time.

Belonging to the Newtonian mechanics system, you can try to build a model with partial differential equations.

Once the model is established, the next step is a series of verification and verification.

Thinking of this, Lin Xian's mouth couldn't help but evoke a smile, and he quickly wrote down lines of numbers on the paper with the pen in his hand.

Let: T be the echo time, G be the acceleration of gravity and H be the depth of the deep hole.

Solution (1): From Galileo's law of falling bodies, it can be known that...

Before I knew it, an hour passed.

Zhuang Tong glanced at the time, stretched his waist and said, "It's getting late, it's almost time to make dinner."

"There seems to be no vegetables in the refrigerator?" Nie Qingqing said.

"It's okay, I just went to the supermarket to do some shopping."

Zhuang Tong jumped off the hanging basket and said to Lin Xian, "Dear, what do you want to eat at night?"

However, Lin Xian did not answer, and kept his head down, writing hard.

"What are you doing so focused on?"

Nie Qingqing murmured and stepped forward to take a look.

Her eyes were full of dense numbers and symbols, row after row of arithmetic formulas, making her dizzy.

Who can stand this?

Excuse me, farewell!

Zhuang Tong couldn't help but said: "I don't understand at all, I'd better cook!"

At this time, Lin Xian raised his head and smiled: "I can do whatever you want."

"Then let's go grocery shopping!" Zhuang Tong laughed.

"Go!"

After saying that, Lin Xian lowered his head again.

Once he finds inspiration, the next formula seems to come naturally. This feeling is really cool, and he can't help but indulge in it.

Sitting on the Beetle, Nie Qingqing fastened his seat belt and said, "Lin Xian feels so strange!"

"Why is it strange?" Zhuang Tong asked with a smile.

"I just feel that he is completely different from other rich second-generation generations. I really can't imagine that he actually sat there and did math problems for more than an hour." Nie Qingqing said with emotion.

Zhuang Tong held the steering wheel and looked at her carefully.

Nie Qingqing was a little hairy when she saw it, so she couldn't help raising her eyebrows and said, "what's the matter?"

"Hee hee, I'm thinking that we might really be best friends for a lifetime!" Zhuang Tong said with a meaningful smile.

Nie Qingli pretended to be calm and said, "I... we promised to be best friends for a lifetime!"

"Ha ha!"

Zhuang Tong laughed and did not expose her.

As a woman, how could she not know that when a woman becomes interested in a man, it means that she is not far from falling in love with him.

And a man like Lin Xian was like a black hole, it was normal to attract women.

The two women went to the supermarket to do some shopping. After returning home, Lin Xian was still doing the questions with his head down.

Seeing this, Zhuang Tong lightly carried the ingredients into the room, trying not to disturb him.

Seven o'clock in the evening.

Lin Xian raised his head, put down the pen in his hand, and let out a long sigh of relief.

"Done!"

Looking at the dense mathematical models on three or four pages of white paper, Lin Xian felt an unparalleled sense of achievement in his heart.

According to the requirements of the title, he established a total of four models, and after verification and analysis, he only needs to import all these mathematical models into the computer, and use C++ or MATLAB to obtain the results of the equations.

To be honest, this question is his current limit. For mathematical modeling, basic mathematics is the key to opening the treasure house. The more keys you have, the greater the chance of opening the door to the treasure house.

"Still need to continue to study!" Lin Xian sighed.

At this moment, the system prompt sound in the brain suddenly sounded.

"Ding!"

"Congratulations to the host for solving the problem and triggering the hidden mission: Heart of a Champion!

【Heart of Champion】

Task requirements: Participate in the Higher Education Club Cup National College Students Mathematical Modeling Contest. Mission Progress: 0%

Mission reward: 27 (the final reward depends on the host's performance in the competition!)