On the following day, in order to express her gratitude to the senior Sister Chen who introduced this part-time job, Lu Zhou decided to invite her to dinner.

However, he was entangled in the question of whether to eat yellow pheasant or eat KFC.

So he asked about another person in Dormitory, Liu Rui.

Liu Rui, who is opening a black row with netizens, and a joyous 嫠 嫠 亓巳 绦睦镎 绦睦镎 牛 牛 牛 蛔 蛔 蛔 蛔 蛔 蛔 蛔 蛔 蛔 蛔 蛔 蛔 猓 猓 猓 猓 猓 猓 猓 猓 猓 猓 骸 骸 骸 骸

then……

Lu Zhou is really please.

At the entrance of the school, the snack street, Shancheng Mala Tang’s doorway, Chen Yushan with a single ponytail sitting opposite Lu Zhou, was spit out of the tongue.

Although tears are coming out, Chen Yushan is still strong, while eating and asking: “How? My sister’s mathematics is still saved?”

Is it so hot?

Lu Zhou was a little confused and lost a fish ball in her mouth. While chewing, she said, “Is there a rescue… Probably? In short, I will try my best.”

“Then please, you, my younger sister, she… In fact, the junior high school science scores are very good, but later… Aaah, I am very hot.”

Lu Zhou silently handed her a glass of water and asked, “Later?”

Drinking water in one bite, Chen Yushan spit out his tongue and sighed and said, “Later… I have a problem with Aunt and the coward. Two people are fighting for the custody of Mengqi. I don’t know the specifics. Clearly, in short, Mengqi is now with me for Aunt.”

Lu Zhou silently nodded, did not say anything.

He does not want to care about other people’s private affairs. In a sense, he is a very self-conscious person.

After eating the mala, Lu Zhou sent Senior Sister Chen back to the Dormitory building, then turned to the direction of the library. .

On the way to the library, he received two emails.

One email was Teacher Liu’s feedback on the data modeling exercise.

Another e-mail is a reply from the journal “Modern Communications and Geographic Information Technology”, indicating that the manuscript fee has been credited to his bank card account, an 150 yuan, a total of 1350 yuan, please check.

“…”

Nine SCIs are so expensive, and it’s better to make missiles than to fry eggs…

Lu Zhou couldn’t help feeling.

However, more than a thousand dollars are also quite a lot. Counting the three thousand pieces earned by the private tutor yesterday, now he has more than 7,000 yuan in the card, and the tuition fee is definitely enough.

Originally, he intended to drag, and wait for a one-time supplement before graduation, but now it seems to be no longer needed.

In the next few days, Lu Zhou’s livelihood is very regular. He is on Wednesday and Friday, and he is used to consolidate his studies. He also prepares courses for other subjects such as information technology, electronic engineering, biology, and chemistry. In addition, he did not fall in the practice of mathematical modeling.

Sometimes he really thinks that if you can really maintain this good study habit, even if you don’t have the help of system, it is a matter of time to become a Study tyrant.

Only with the help of system, this process has been accelerated.

And it’s like plugging in a rocket…

On Saturday, Lu Zhou went to the home of Mrs. Yang and coached Han Mengqi mathematics.

Perhaps because of the last accident, or maybe a certain agreement between the mother and the daughter, this time Mrs. Yang did not lock the door before going to work, but Lu Zhou must be optimistic about his daughter.

Expressionless’s eyes are on the door of the mother, Han Mengqi looked towards Lu Zhou: “That, let’s get started.”

When she finished, she turned back to her room.

As Han Mengqi’s feet stepped into the room, Lu Zhou accidentally discovered that she had not seen it for a week. This time she was tidying up the room.

Without extra communication, Han Mengqi spread the book on the table and turned to the page of the corner, looked towards Lu Zhou.

“According to the outline you gave me, I have already seen the analytic geometry of compulsory two… and then?”

“And then?” Lu Zhou raised his eyebrows and asked with a smile. “Do you know where you don’t understand?”

“Nothing I don’t understand, it feels very simple.” Han Mengqi raised his small head and was impatient. “And then?”

“Then I will test you,” Lu Zhou took an A4 paper from the side and wrote it with a pen.

After writing this question, Lu Zhou made a gesture of asking.

Han Mengqi’s eyebrows jumped slightly and just said a big sentence, she did not expect Lu Zhou to test her on the spot.

Biting her teeth, she picked up the pen and thought about it for a long time.

The result has been ten minutes, and only the First Step is solved.

which is–

After waiting for about ten minutes, Lu Zhou looked at the watch, laughed. “At the time of the college entrance examination, you are only allowed to think about ten minutes on a single question. Now, you can only get up to three points on this question. “”

“Hey…” Han Mengqi bit his teeth and looked dissatisfied. However, the solution is like this. Sometimes the more urgent you are, the more you can’t solve it.

Lu Zhou laughed, turned a roll from the pile of materials next to it, pointing to the position of the second countdown, and continued: “And the most important thing is that this question is what you missed on this paper.”

“…you bully me.” Han Mengqi dropped the pen and said with angrily Lu Zhou, “I know I am stupid.”

“I am just teaching you, and I have never said that you are stupid. On the contrary, I am very optimistic about your intelligence, so please don’t be arrogant.” Lu Zhou picked up the pen she dropped and wrote the rest on A4’s paper. The process, “The key to this problem is to determine the value of M, so the second step must be set M (x1, y1), and according to |MF2|=5/3, and M2 on the parabolic C2 Conditional solution…”

“Our second goal is to find the half focal length of the elliptical C1. Solve this step and the rest of the questions become a problem with the equations.”

Lu Zhou wrote the key to each step on paper and clarified the ideas for solving the problem.

At the beginning, Han Mengqi was impatient, but then he stared at the paper and gradually became serious.

Eventually, a clear comprehension appeared on her face.

The small mouth was slightly moved, and Han Mengqi, who was staring at the draft paper intently, frowned, and thoughtfully said: “It turned out to be…”

“Your teacher must have said it, but you have never heard it.”

“Our teacher… I didn’t tell you in detail.” Han Mengqi said in a reluctant tone.

Lu Zhou is happy: “You can say this to your mathematics teacher, and see if you can kill him.”

Han Mengqi’s teeth are itchy, but he can’t do anything, only snorted.

“No wonder my elder sister said that you are very mean…”

Lu Zhou 😕 ? ?

Someone is saying bad things behind me?

I can’t hear it.

Lu Zhou coughed, broke the topic, and picked up the pen while saying: “This question is a typical intersection point for the elliptic equation problem. I believe that the next time you encounter this type of question, you can at least get half of the score. “”

“There are still half of the points?” Han Mengqi asked with a sigh of relief.

“There is still half of the points in the second question. This kind of question is usually combined with the vector question in the college entrance examination, so there is usually a second question…”

As he said, Lu Zhou continued to write behind the stem.

[The point N on the plane satisfies the vector MN=vector MF1+vector MF2, the line l∥MN, and C1 intersects two points A and B. If the vector OA*OB=0, the equation of the straight line l is obtained. 】

At the moment of seeing the title, Han Mengqi was completely forced and looked helplessly to Lu Zhou.

However, Lu Zhou did not look at her, but sat at the bedside and picked up the exercise book on the side to find the next example.

“You try to do it first, I can’t do it, I will teach you again, time is fifteen minutes, let’s get started.”

More miserable than the first question, this time Han Mengqi only wrote a solution, and the rest of the things were not correct.

I don’t know if it was because of the almost big younger sister. Lu Zhou didn’t feel very impatient, and did not ridicule her. She was also a “sent a sub-question”, but patiently explained her ideas and ideas. process.

Looking at the steps on the draft paper, Han Mengqi widened his eyes and whispered, “It’s amazing…”

“The process of my study is to sum up and summarize the experience from the mistakes. I hope that you can find out the questions that you wouldn’t normally find. It’s best to copy them on the book yourself, and then I will explain it to you every week,” Lu Zhou will Compared to Han Mengqi, casually, “The wrong question is to learn mathematics, even for all science, if you want to learn science, you must prepare. Just like ADC goes out with Dolan, the assistant has to take the eyes, are Basic operation.”

Han Mengqi eyes shined, immediately came to the interest, interjected: “You also play 撸 撸 撸? Which district? My nurse thief 6!”

“…Black Rose.”

“I add your friend! Give me your Q number… Hey!”

Lu Zhou reached out and knocked on her forehead, looking at her forehead, and said with a sigh of relief: “I still play games, wait for you to test the mathematics this month and test the 100 points!”


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