The system development of a scholar

Chapter 26 Full Mark Exam Paper
"It's time to prove yourself!"

Xu You took out a comprehensive mathematics paper and sat upright with a sense of ceremony.

He intends to measure and calculate correctly whether his math level is one stroke or one centimeter away from the full score.

When the time reached 06:30, Xu You began to write.

BCADA...

1/2, -3, 3...

After 10 minutes of writing, choose to fill in the blanks, Xu You raised his head and raised his sore neck, lowered his head and continued to do...

In triangle ABC, the corresponding sides of angles A, B, and C are a, b, and c respectively, and (2a-c) cosB is equal to bcosC
(1) Find the size of angle B;
(2) Suppose m is equal to (sinA, cos2A), n is equal to (4k, 1), k is greater than 1, and the maximum value of mn is 5, find the value of k.

After only 10 seconds, Xu You started to write.

Solution: (1) Since (2a-c) cosB is equal to bcosC,

So (2sinA-sinC)cosB is equal to sinBcosC,

So that 2sinAcosB is equal to sinBcosC plus sinCcosB,

So 2sinAcosB is equal to sin(B plus C) is equal to sinA
And because the value of A is between 0 and Wu and does not include
So sinA is not equal to 0, so cosB is equal to 1/2, and B is equal to 元/3.

（2）mn等于4ksinA加cos2A等于-2sin^2A加4ksinA加1，

From (1) we know that A is between 0 and 2￠/3 and does not include,

Let sinA be equal to t, then t is between 0 and 1, 0 can be taken instead of 1,

则mn等于-2t^2加4kt加1，因为k大于1，所以当t等于1时

Mn takes the maximum value, the maximum value is -2 plus 4k plus 1 equals 5
It is solved that k is equal to 3/2.

It only took 5 minutes to finish this not-so-easy question in a smooth manner. Xu You let out a breath and continued to go deeper...

Half an hour later, Xu You stopped at the last question and began to think and analyze calmly.

Another function question.

God is annoying!

Although I have absorbed my cousin's notes, and I have been working on the special public relations for a long time recently, it is still difficult to get the ideas after reading the questions only once.

Therefore, Xu You read it twice, and then his thoughts suddenly became clear.

"Before I couldn't get high enough for you, but now you can only be the stepping stone for me to become a top student, and let you be a group of high-cold ones."

He had a deep resentment towards the function, and as he murmured, Xu You calmly wrote.

Finally, at [-]:[-], Xu You finished the paper.

"call……"

The strings that had been tense for more than two hours were finally released, straightened up and twisted, to relieve the sleepy back, Xu You turned his head and looked out the window, it was already the beginning of the lights.

Not in a hurry to come up with the answer, Xu You got up and walked outside the house, rubbing his stomach, feeling hungry.

When I came to the living room, my mother was sitting on the sofa playing with her mobile phone. Xu You asked, "Mom, do you have food?"

Chen Shu raised his head and said, "It's hot in the pot, I'll bring it to you."

"No, I'll do it myself."

Walking into the kitchen, I opened the lid of the pot and saw a bowl of fish soup, a plate of braised shrimp, and a plate of braised potatoes.

After serving the table one by one, Xu You sat down and ate while scrolling through Moments to see if all the scumbags were sitting in five consecutive seats in the Internet cafe.

Liu Shen: It’s finally a holiday. Are there any waves? I don’t use oars to row a boat, it’s all about the waves~

Li Zhen: Good fortune today.

Zhang Zhen: Take a walk in the water park, hold your hand, and your son holds the ax.

Wu Haonan: After seeing you, I just want to be a kind of person
.

.

.

.

.

your people.

Zhu Yu: The Internet speed of this Internet cafe is really fast, I will come here again next time.

"Enlightenment is a good thing, but it's a pity you didn't..."

After exiting, Xu You clicked on the browser and continued to eat while scrolling through various headlines.

After eating the dishes on the plate, Xu You took them into the kitchen to wash and put them away, then came out and sat on the sofa, watching TV with his mother.

When Chen Shu looked at his son, his eyes were always spoiled, and he asked with a smile, "Are you full?"

"Uh."

After hiccupping, Xu You nodded and said, "I'm so full, I feel like I'm going to explode."

Chen Shu gave Xu You a reproachful look, and said, "Then get up and take a walk, or it won't be good for your stomach."

Xu You was really full, he stood up and said, "I'm going downstairs for a walk."

"Well, don't be too late." Chen Shu nodded.

After changing his shoes and taking the keys, Xu You went downstairs.

Still walking along the lake, not for anything else, cool ah.

After walking half a circle, Chen Yu, who was running at night in short-sleeved shorts, came to meet him.

Xu You hurriedly greeted with a smile: "Teacher Chen."

When he came to stop beside Xu You, Chen Yu took a breath and asked, "Why are you still wandering around so late?"

Xu You rubbed his stomach and said, "I'm full, come out for a walk."

"That's it."

Chen Yudao: "Would you like to run around with me?"

'……don't want! '

Xu You smiled and said, "It is not advisable to exercise vigorously after meals."

Chen Yu didn't force it, and said, "Then let's walk half a circle together, I just happen to be a little tired."

After finishing speaking, he turned around and walked with Xu You in the direction he came from.

Wiping his sweat with the towel around his neck, Chen Yu asked casually, "Is there anything you don't understand in English recently?"

Xu You laughed dryly, "I don't understand a lot."

As for the difficult grammar, Xu You really didn't understand it, and he could get eighty or ninety points in the exam, all thanks to enough vocabulary.

"Then work harder, don't spend all day doing math problems, the college entrance examination also requires English." Chen Yu said casually.

'Is this... out of balance? '

Xu You smiled awkwardly, and said, "Definitely work hard, but you really don't know some knowledge points, and there is nowhere to use your energy."

"No, come and ask me."

Chen Yu looked at him sideways, thought for a while, and suddenly said: "From now on, every Sunday from [-]:[-] am to [-]:[-] am, you come to my house and I will help you with free tutoring, okay?"

Xu You was flattered and said, "How bad it is to disturb your rest."

In fact, Xu You really had the idea of ​​finding a cram school to supplement his English.English is not like other subjects. He put in two or three times the efforts of others, and with the help of the system, he can still catch up. Because his foundation is too poor, even if he swallowed high school vocabulary in one bite, he tried his best to understand Li Gusui's notes. But it is still difficult to get a high score.

So when Chen Yu made this proposal, Xu You was very moved.

Not only because of Chen Yu's strength, but also because Chen Yu knew him well and could help him improve his grades in a targeted manner.

"That's it."

Chen Yu made a final decision: "If you don't go out to play these few days, come here. Your grades in other subjects have improved, but English is a little weak, which is too slow."

"I'm afraid you forgot that my biology score has turned me into a salty fish..."

Xu You thanked: "Thank you Teacher Chen, then can I come over tomorrow?"

He gets excited at the thought of studying.

"You are in a hurry."

Chen Yu smiled, nodded and said: "But this is the motivation. Okay, come over tomorrow morning, and I will help you secretly start a small stove."

"Then I'll come here tomorrow with the cheek to trouble you." Xu You sincerely thanked Chen Yu.

"No trouble."

Chen Yu looked at Xu Youxi and said, "As long as you can get a high score in English in the college entrance examination next year, I think everything is worth it!"

"Next year's college entrance examination, I will definitely get full marks in English!"

These words burst out from Xu You's mouth from the bottom of his heart.

Chen Yu smiled and said, "Don't talk big. Don't talk about the college entrance examination, it's just the usual test. We don't have a single student who can get a perfect score."

"I sure can!"

Xu You said almost as if he promised, looking at Chen Yu's eyes, there was a sparkle.

"Okay, then the teacher is looking forward to it."

Chen Yu thought for a while, then smiled and said, "Thinking that I can teach a single subject of English, I feel so lucky."

Afterwards, Xu You changed the subject, and the two of them walked and chatted.

But in the bottom of his heart, Xu You set himself a task that must be completed: next year's college entrance examination, English must get full marks!
After saying goodbye to Chen Yu downstairs, Xu You turned around and went upstairs as he stood there watching her slowly disappear.

After returning to the room and sitting down, Xu You took out the answer and began to correct it.

"150!"

After 3 minutes, Xu You was stunned!

Multiple choice questions are all right!
Fill in the blanks all right!
All the answers are correct!
"I'm afraid this is a bit... fake?"

Xu You hurriedly checked the answer carefully again, but it was still a perfect score, 150!

"Ha ha……"

Xu You showed an expression of extreme surprise, and the hand holding the test paper trembled a little!
Full score test paper!
It's so big, I haven't seen this kind of baby before!

And I made it myself!

so excited!
Want to laugh!

"Ha ha……"

Xu You didn't laugh out loud, but secretly laughed for a while, and then wondered if he should frame this paper and hang it up. After all, this was an important milestone on his way to becoming a top student.

After thinking about it, I finally forgot it.

Fold the paper and put it away, Xu You clicked on the system.

"Ding, the task: [Complete a full-score test paper] is completed, and reward 200 Xueba points. I hope the host will continue to work hard."

Click on the task list, and sure enough, the task has been completed, and the top Xueba points have also increased by 200.

"Hey, people are afraid of being poor. If you have some money in your pocket, you feel at ease."

Xu You didn't plan to use this points to exchange for pills, but wanted to wait until a critical moment before using them.

After all, the effect of icing on the cake is not as good as giving charcoal in the snow.

　Newcomers ask for recommendations and favorites!grateful!

　　


(End of this chapter)