Scholar’s Advanced Technological System

The next day, in order to thank Chen Xuexi for introducing her to the part-time job, Ark decided to invite her to dinner.

However, he was caught up in the issue of whether to eat braised chicken or Kentucky.

He then questioned Liu Rui, another living person in the bedroom.

Liu Rui, who is in double row with his internet buddy, was sent back to the spring water. At this moment, he was worried, and didn't listen carefully to the question of the ark. He didn't go back and say: “Spicy hot, cheap and affordable! ”

Then…

The ark is really invited.

Snack street in front of the school, the hot and spicy door of Mountain City, Chen Yushan with a single ponytail sat opposite the ark, spicy straight tongue.

Even though the tears were almost spicy, Chen Yushan was still strong enough to eat and ask: “What do you think? Is my sister's math still alive? ”

Is it that hot?

The ark lost a fishball in its mouth somewhat bewildered, chewing and saying, “And save... probably? Anyway, I'll do my best. ”

“Then please, my sister... in junior high school, science grades were good, but then... ah ah ah ah, it killed me. ”

Ark silently handed her a glass of water and asked, "Later? ”

After sipping the water, Chen Yushan threw up his tongue cutely and continued with a soothing breath: “Later... my aunt and uncle had a little problem with their relationship, and the two were arguing for Mengqi's custody. I don't know exactly. Anyway, Maggie's with my aunt for the time being. ”

The ark nodded silently, saying nothing.

He doesn't really want to care about other people's personal affairs. In a sense, he's a very self-absorbed person.

After eating the spicy hot meat, Ark sent Sister Chen back to the bedroom building, then turned towards the library.

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

An email is from Teacher Liu, feedback on the data modeling assignment.

The other e-mail was a reply from the journal Modern Communications and Geographic Information Technology, indicating that the writing fee had been placed on his bank card account for 150 yuan, for a total of 1350 yuan. Please check it.

“ …… ”

Nine SCIs make so much money, it's better to make missiles than fried eggs...

The heart of the Ark cannot help but feel emotion.

However, more than 1,000 yuan is no big deal. Taking into account the 3,000 yuan earned as a tutor yesterday, his card now has more than 7,000 yuan, and the tuition fee must be enough.

Originally he was going to drag it off for once before graduation, but now he doesn't seem to need it.

Over the next few days, the life of the ark will be regular, with a liver bite Monday, Friday, and Tuesday, Thursday, used to consolidate learning while studying courses in other disciplines such as information technology, electronic engineering, biology and chemistry. Beyond that, he didn't leave behind the mathematical modeling exercise.

Sometimes he really feels that if he can maintain this good learning habit, it will be premature to become a bully without systematic help.

However, with the help of the system, the process has been accelerated.

And it's like a rocket...

On Saturday, the Ark, as usual, went to Ms. Yang's house to tutor Han Mengqi in mathematics.

Perhaps because of the last accident, perhaps some kind of agreement was reached between the mother and daughter. This time, Ms. Yang did not lock the door before going to work, but only instructed the Ark to keep an eye on her daughter.

Emotionless eyes sent his mother out the door, and Han Maggie looked at the ark: “Well, let's get started. ”

After that, she turned back to her room.

As Han Mengqi stepped into the room, the ark unexpectedly discovered that it had not been seen for a week, this time she had tidied up the room.

Without extra communication, Han Mengqi spread the book over the table and turned to the corner of the page, looking at the ark.

“According to the outline you gave me, I have seen the compulsory second analysis geometry… then what? ”

“Then?” Ark's eyebrows picked and asked with a smile, "What don't you understand first? ”

“There's nothing I don't understand, it feels pretty simple.” Han Monkey raised his little head, impatient, “and then what? ”

“I'll test you together," the ark took an A4 paper from the side and wrote in a pen.

[In the right-angle coordinate system xoy, the left of ellipse C1: x ² a ² + y ² b ² = 1 (a > b > 0) and the right focus are F1 and F2, respectively. where F2 is also the focal point of parabola C2: y ² = 4x, point M is the intersection of C1 and C2 in the first quadrant, and | MF2 | = 53. Equation for C1.

After writing this question, the Ark made a gesture, please.

Han Mengqi's eyebrows jumped slightly. She just said a big word. She didn't expect the ark to test her live.

Biting her teeth, she picked up the pen and pondered over the draft paper for a long time.

Ten minutes have passed and only the first step has been solved.

That is...

[From C2: y ² = 4x, F2 (1, 0).

About ten minutes later, the ark looked at the watch and laughed and said, "At the college entrance exam, you can only think for ten minutes at most on one question. Now, you can only get a maximum of three points for that question. ”

“Hmm...” Han Mengqi bit his teeth and looked uncomfortable. But that's the solution, and sometimes the more you rush, the less you can solve it.

Ark laughed and flipped out a roll from the pile of material next to him pointing to the penultimate question, continuing: “And most importantly, the question you missed on this roll. ”

“... you bully me.” Han Monkey dropped her pen and stared angrily at the ark and said, “I know I'm stupid, come on. ”

“I'm just teaching you, and I never said you were stupid, but on the contrary, I like your wisdom, so please don't be selfish.” The ark picked up the pen she dropped and wrote down the rest of the process on the paper of A4, "The key to this topic is to determine the value of M, so the second step must be M (x1, y1) and solved according to the | MF2 | = 53, and the two dry conditions of M2 on parabola C2...”

“Our second goal is to find the half-focus of the elliptical C1, untie this step, and the rest becomes the problem of solving the equation set. ”

The ark writes the key to each step on paper and clears the way to solve the problem.

At first, Han Mengqi was impatient, but then the eyes on the paper gradually became serious.

Eventually, a glimmer of understanding appeared on her face.

Little mouth slightly glued, focused on the draft paper's Han Mengqi eyebrows locked tightly, and nodded his head: “I see...”

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

“Our teacher… talks without you in detail.” Han Mengqi argued reluctantly.

Ark Zhou Le: “You can tell that to your math teacher, let's see if we can piss him off. ”

Han Mengqi's teeth itched, but he couldn't help it, so he hummed.

“No wonder my sister said you were mean...”

Ark:????

Did someone say something bad about me behind my back?

I can't pretend I didn't hear that.

The ark coughed, disconnected the topic, picked up the pen, and said: “This is a typical intersection to ask for an elliptical equation, and I'm sure the next time you come across this type of question, you can get at least half of it. ”

“What about the other half?” Han Mengqi asked with a crooked head.

“The other half is divided into second questions, which are usually examined jointly with vector questions in college entrance exams, so there is usually a second question…”

As he spoke, the ark continued to write behind the dry question.

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

The moment I saw the title, Han Mengqi looked at the ark helplessly.

Instead of looking at her, however, the Ark sat by the bed, picking up the workbook beside her and looking for the next example.

“You try to do it first, I can't do it. I'll teach you. Fifteen minutes, let's go. ”

More tragic than the first question, this time Han Mengqi wrote only one spelling, and none of the rest was right.

I don't know if it's because I have a sister-in-law who's about the same age that the Ark didn't feel very impatient or ridicule her for being a "split topic” again, but rather for being patient in explaining her thoughts and processes.

Looking at the steps on the draft paper, Han Mengqi opened her eyes and whispered: “Wow...”

“My learning process is to constantly sum up and learn from mistakes. I hope you find out what you don't normally do, preferably by copying it onto a book, and I'll explain it to you every week,” Ark will be better than giving it back to Han Mengqi, casually, “the wrong book is necessary to study mathematics and even all science, if you want to learn science well, you have to prepare. It's like ADC going out with Dolan, the auxiliary with eyes, it's all basic. ”

As soon as Han Mengqi's eyes lit up, he immediately came to rejoice. “Are you playing too?" he said. Which district? My nanny thief 6! ”

“… Blackberry. ”

“I'll add your best friend! Give me your Q... Oops! ”

Ark reached down on her forehead, looked at her with her forehead covered and said, "Still playing games, wait 100 points for your math exam this month! ”