my scientific age

Chapter 82 Full marks in math!

Feeling the pressure from Mr. Luo Wenguang, Yu Hua stood tall and straight, his back was as straight as a benchmark, his head held high, a look of confidence appeared on his face, and his whole person revealed a determination: "It should be the student's academic performance."

"Yes, sir, what is the second sub-question of the last final question?" Today's Yu Hua is different from the past, full of sharpness like a sharp sword, Luo Wenguang sees this, and he already has a bottom line in his heart, but Still speaking.

This kind of momentum is definitely not something that ordinary students can have.

"The second sub-question is about mathematical induction and number sequences, which are very deceptive. Mathematical induction is required in the final solution stage." Facing the test from Luo Wenguang, Yu Hua's face was calm and his words did not stop.

"Do you remember how to ask for the maximum value of the sixth major question and the third minor question? Just give a rough estimate." Luo Wenguang nodded and asked again.

The sixth major problem is the derivative common tangent problem, which is very difficult. It will take some time to solve it with Luo Wenguang's mathematical level.

“记得，具体解题过程为记h（x）=f（x）+g（x），当a=1-2b=1时，h（x）=1/3x-x-1……”余华仔细给出第六大题的求解过程。

第六大题题目为设函数f（x）=1/3x-ax（a＞0），g（x）=bx+2b-1。

There are three sub-questions in total.

(1) If the curve y=f(x) and the curve y=g(x) have a common tangent at their focus (1, c), find the values ​​of a and b.

(2) When a=1-2b, if the function f(x)+g(x) has exactly two zeros in the interval (-2, 0), find the value range of a.

（3）当a=1-2b=1时，求函数f（x）+g（x）在区间［t，t+3］上的最大值。

The subject of this derivative common tangent is really difficult, that is, to test the students' mastery of the tangent equation at a certain point on the derivative research curve, and to test the zero point of the function and the maximum value of the function in the closed interval.

When faced with this question, there are not many students in the class who only wrote one solution word.

Of course, this is no problem for Yu Hua, he can clearly remember the content of each question and the content of the answer.

After half a minute, the solution process was finished.

"What is the answer to question 2 of the fill-in-the-blank question?"

"(-3, 0)."

"What is the tenth test of the fill-in-the-blank question?"

"Definition of Definite Integrals Find definite integrals."

"What's the answer?"

"2."

"Why did you choose C for the third multiple-choice question?"

"The third multiple-choice question is very deceptive. The question is a function, and the test is a vector."

Yu Hua was calm and calm, and answered fluently.

"The last question, how to solve the trigonometric function maximum value problem?" Luo Wenguang said with a faint smile on his face.

Yu Hua still did not pause, and answered truthfully: "To solve the maximum value of trigonometric functions, we must first analyze the nature of the problem, and then solve it."

"Okay, go back first and prepare for the afternoon exam. This quiz is different from previous quizzes. It must be taken seriously and must not be slack. Sir looks forward to your performance." After listening to Luo Wenguang, his eyes were full of admiration. And anticipation, as if a huge treasure had been discovered, gave a small hint.

After a test, Yu Hua's performance was really amazing, even Luo Wenguang had to be surprised and full of admiration.

This guy is truly extraordinary.

As for the purpose of coming to the classroom to find Yu Hua, at this moment, Luo Wenguang has long been forgotten. Based on this inquiry alone, Luo Wenguang can conclude that Yu Hua obtained the perfect score on the basis of his own strength, rather than cheating.

Again, math never lies.

"Sir, is there anything special about this quiz?" Yu Hua asked softly with doubts after obtaining the prompt information given by Luo Wenguang.

Is this quiz different from previous quizzes?
what happened?

"I can't say it yet, you will know in the future, I will go first." Mr. Luo Wenguang did not continue to disclose the situation of the recommended student system. With a smile on his face, he glanced at Yu Hua with anticipation, and then turned and left.

"Goodbye sir." Yu Hua had no choice but to say goodbye.

When he came, Luo Wenguang had a serious face, and even had a faint sense of scrutiny. When he left, Luo Wenguang was full of expectations and smiles.

"The difference in this quiz... There are too few clues, and there are no answers. Whatever it is, as long as you do well in the test, you can speak with your grades." Yu Hua looked at Luo Wenguang's leaving back, pondering in his mind, and rummaging through his memory. Harvest, shook his head, turned and returned to the classroom.

For students, the most important weapon is grades.

With the results, everything is easy to say.

No results, everything is suspended.

Now, go back to cooking.

There are no unpalatable canteens, only loyal cooks.

……

At noon, the weather became clear.

Boys' dormitory, Erjia[-].

"Wow..." A sound of flipping the book sounded.

Jin Jie sat on the lower bunk with the best daytime lighting, with a handsome face, straight facial features, and flat hair, giving people a feeling of high spirits. Holding an English textbook in both hands, he kept reciting English words.

After taking the Chinese language test in the morning, Jin Jie quickly returned to the dormitory to concentrate on reviewing the most important English to him and prepare for the upcoming English quiz.

In the first class of literature, with his excellent language talent, Jin Jie's English scores are among the best, and he is famous for his fluent English.

The key to the subject of English is to recite the words. If you can recite the words, you can know the general meaning. Even if you may lose points due to difficult problems, most of the points can be collected.

Reciting words has become a must for Jin Jie every day, and the most important thing before the arrival of this English test.

Traveling against the current, retreating if not advancing.

In this first-month quiz, Jin Jie must do his best. Although he was inexplicably reprimanded and warned by Lin Wan last time, which made him worry about gains and losses, his personal emotions still did not affect his studies.

Pursuing Lin Wan is small, focusing on studies is big.

There is another reason, that is, Jin Jie gets information about education reform from home. Next year, Peiping will hold a nationwide unified admissions test, and this year, a new thing will appear in the national education system...

Guarantee students.

Exempt from taking the unified admissions examination, they can directly enter the national university, and the winner does not need to bear the risks in the examination. For students, the recommended student is almost a university invitation letter, which can be called a symbol of identity and strength.

The allure is not too big.

And this first-month quiz has an important relationship with the survival of the walk.

There is no one else in the bedroom, the furnishings are simple, and there is no luxury. The only difference is that there is a brand-new lighting source in the room.

"Squeak!" At this moment, the bedroom door opened gently, and there was a slight rubbing sound.

A tall boy walked in and saw Jin Jie who was sitting beside the bed studying with peace of mind. He lowered his voice, closed the door gently, and walked to his bed to avoid disturbing his studies.

It's not special treatment, but disturbing classmates' study before the exam. The seriousness of this kind of thing...

Nothing more than murdering parents.

"Bang!" Just the second after the door was closed, suddenly, the whole bedroom door slammed open, and there was a loud noise.

The tall boy was confused and at a loss.

what happened?

Jin Jie, who was reviewing his homework, frowned, but he was not angry. He looked up at the door, and saw his roommate Liu Furen standing at the door, panting.

"Major event! A major event!" Liu Furen stood at the door, his chest heaving, his clothes slightly rough, he almost ran upstairs all the way, facing Jin Jie and the sports-loving Lao He, raised his right hand and said.

"Fu Ren, what is it that makes you act like this?"

Seeing this, Jin Jie was a little curious, this was not like Fu Jen's style in the past.

"Lao Jin, Lao He, Niang... Niang Xipi's, it's a subject in the morning, and someone got a perfect score!" Liu Furen adjusted his breathing a little, and turned his eyes to Jin Jie and the tall boy He Yutian, announcing the important news he just got.

silence.

In an instant, there was a brief silence in the bedroom.

Jin Jie looked shocked, and the English book in his hand fell to the ground subconsciously. He Yutian was so dumbfounded that his head was dizzy. After going through the math test in the morning, both of them understood that this first month How hard is the math exam?

Jin Jie, who can take the test with 35 points on weekdays, has a self-assessment score of no more than [-] points.

However, with such a test paper, someone actually got a perfect score?

Simply out of the world!
"Fuck, is this true? It counts as a full score!!!" After a few breaths, He Yutian recovered from the shock and couldn't help shouting loudly.

Liu Furen nodded: "Of course it's true, the school is about to go crazy."

"Fu Jen, the student who got the perfect score in math is from the literature class or the science class, is it An Yuan, or is it Lin Wan?" Jin Jie took a deep breath, clenched the English textbook with his right hand, suppressed his emotions, kept calm, and asked. road.

Jin Jie, who knows the inside story of the first month's quiz, deeply understands what a perfect score in this math exam means.

The recommendation system is a start-up, and the name is naturally rare.

It's fine if it's from the science class, but if it's from the literature class...

After the school officially announced the system of recommending students, the competition will definitely be more intense.

(End of this chapter)