Zhao Maodan was almost not crazy by Jia Rongrong, just when he was about to find Zheng Dong desperately regardless of life and death, Zheng Qingshui took Lianghe police to take him away.

After the people in the courtyard were taken away, the people in the entire courtyard danced happily and jumped and jumped.

Someone found a firecracker outside the gate from nowhere.

This atmosphere is even more lively than the Chinese New Year!

…………

"You're leaving tomorrow?"

Zheng Yunxiang, Zheng Dong's homeroom teacher, heard that Zheng Dong came back as soon as possible, but when he came, he didn't meet Zhao Maodan, only firecrackers.

"Well, I'll go see Mr. Chen after I divide the things I sent back, and I'll leave early tomorrow morning, and if it goes well, I should be able to catch up with the start of school registration." ”

"That'...... It's just ...... in your house."

Zheng Yunxiang really doesn't know what to say to Zheng Dong now, how to judge whether he should support him and do all this.

It is still necessary to resolutely oppose his distraction like Principal Chen, and just want him to focus all his attention on his studies and not waste his superhuman talent.

After Zheng Dong helped the township chief Xu Liangzhou to make a good career in the township, he has always been in a contradiction.

In doing so, he was able to lift a lot of people out of poverty, which was also a good thing.

If he can meet his and his own expectations according to President Chen's ideas, and make some achievements in the international arena to win glory for the country, it is also a good thing with infinite glory, but this expectation is not so easy to achieve.

I think he can do more useful and good things for the people in his hometown, and I also think that he can really achieve some great achievements and win glory for the country.

This may be the ambivalence of people who are engaged in education when they see an all-round genius like Zheng Dong!

"Teacher, don't worry! I have already arranged everything at home, even if there is something that Township Chief Xu can't solve, you can call me!"

As he spoke, he took out the big brother from behind him and shook it in front of Zheng Yunxiang.

"What is this?"

Zheng Yunxiang looked at the black guy in Zheng Dong's hand for some reason, with a small black head on it.

"Modu bought it, big brother! That is, a mobile phone! You can sit here and call all over the country, why don't you try, let's call Teacher Chen to the school first?"

For most of the landlines now, when they are still drawing circles, Big Brother is as rare as tens of millions of luxury cars now.

"I still don't want it, I won't use it. ”

Zheng Yunxiang waved his hand and stopped Zheng Dong from dialing with a wry smile.

It's been so long, and when I suddenly saw Zheng Dong like a child who got a good toy and offered a treasure, I suddenly felt a little bitter in my heart, did I put a lot of pressure on him?

A genius though!

Although he is much more mature than other children, he is still an eight-year-old after all!

"Zheng Dong, Zheng Dong, you little rabbit cub come out for me! What did you say in the first place? It took so long to come back, and you didn't know how to go and see me...... Where's you, little bastard?"

Just when Zheng Dong and the two were about to end their conversation, the old principal Chen Bing came to the big courtyard of Zheng Dong's house angrily, followed by Zheng Wei, that is, the youngest son of Zheng Dong's third master, Zheng Lin's family, and Zheng Dong's uncle.

"Teacher, Xiaodong should be in the ...... That!"

Zheng Wei stretched out his little finger to Zheng Dong and the others who came out of the house.

"Teacher, I said to Teacher Zheng to see how old you are! Why are you here, I brought you a lot of gifts, but they haven't arrived yet, and it's estimated that it's going to be soon, waiting for you to ......."

"Don't talk so much nonsense! Let me ask you, do you know how to solve the ternary equation? Is the argumentative essay narrative clearly divided? Do you understand the value of the ternary quadratic function?

Without waiting for Zheng Dong to finish his sycophants, Chen Bing asked angrily.

How to solve the system of ternary equations:

Examples

3x-y+z=3

2x+y-3z=11

x+y+z=12

Answer:

3x-y+z=3（1）

2x+y-3z=11（2）

x+y+z=12（3）

5x-2z=14(4) from (1)+(2)

From (1)+(3) 4x+2z=15(5)

From (4)+(5), we get 9x=29, and the solution is x=29/9

Substituting (5) yields 116/9+2z=15, and the solution yields z=19/18

Substituting (3) yields 29/9+y+19/18=12, and the solution yields y=139/18

So the solution of the equation is: x=29/9, y=139/18, z=19/18

The second answer:

3x-y+z=3（1）

2x+y-3z=11（2）

x+y+z=12（3）

5x-2z=14(4) from (1)+(2)

From (1)+(3) 4x+2z=15(5)

From (4)+(5), we get 9x=29, and the solution is x=29/9

Substituting (5) yields 116/9+2z=15, and the solution yields z=19/18

Substituting (3) yields 29/9+y+19/18=12, and the solution yields y=139/18

So the solution of the equation is: x=29/9, y=139/18, z=19/18

How do I use MATLAB to find the minimum value of a ternary quadratic function?

The function is Y=-22.92X1+52.32X2+10.90X3+2.62X1X2-11.41X1X3+17.93X2X3+1.58X1^2-28.57X2^2+18.11X3^2+220.65,X1,X2,X3 are all [-1.682,1.682]

Analysis Answer:

Y=@(X)-22.92*X(1)+52.32*X(2)+10.90*X(3)+2.62*X(1)*X(2)-11.41*X(1)*X(3)+17.93*X(2)*X(3)+1.58*X(1)^2-28.57*X(2)^2+18.11*X(3)^2+220.65;

x0=[1 1 1]; lb=-1.682*[1 1 1]; vb=1.682*[1 1 1]; options = optimset('algorithm'，'active-set');

[X Y]=fmincon(Y，x0，[]，[]，[]，[]，lb，vb)

Zheng Dong saw that Mr. Chen looked like he was about to turn his face without giving an explanation, so he didn't dare to talk nonsense, so he directly found a pen and paper to write and give his own explanation.

The people standing around were shocked and shocked to see Zheng Dong painting talismans again, chanting scriptures and saying something they couldn't understand, and they admired Zheng Dong even more.

This prodigy really didn't cover it!

"Well, not bad!Argumentative essays and narrative essays......"

This time, Zheng Dong didn't wait for Chen Bing to finish speaking, and began to express his understanding.

Narrative essays focus on moving people with emotion, while argumentative essays focus on convincing people with reason.

"Reasoning" is the key to an argumentative essay, and you must hold your own views on the issues being discussed. Arguments are the soul of an argumentative essay, and they must be correct and distinct. Factual arguments must be true and credible, and Taoist arguments must be convincing.

Argumentative essay is by no means the same as a simple argument plus arguments, writing an argumentative essay emphasizes the process and method of using arguments to prove arguments, which is argumentation. Facts speak louder than words, and if you cite conclusive and typical facts, your point of view will be strongly proven, therefore, examples are most commonly used. Argumentating a point of view according to correct and credible scientific principles and celebrity remarks is a kind of reasoning argument, which often makes the argument authoritative, and thus more convincing. Everyone must learn these two basic methods of argumentation. In addition, comparative argumentation is to compare the arguments or arguments of the positive and negative sides, and prove the argument in the comparisonFigurative argument is the use of well-known things as metaphors to prove arguments, etc.

"Hehe! I said Mr. Chen, you should rest assured now! You see Xiaodong, he hasn't forgotten the homework you assigned him!"

Zheng Yunxiang listened to all of Zheng Dong's answers, and laughed at the glaring expression of Old Principal Chen Bing.

He was really worried about Zheng Dong before Zheng Dong didn't answer Chen Bing's question, this kid heard that he had been busy making money during this time, and he was afraid that he hadn't completed the homework assigned by Principal Chen, with his temper, if Zheng Dong couldn't meet his requirements, it was estimated that he wouldn't be spared easily, and it was even possible to go to Kyoto Junior University to report on him.