As a reborn super academic master I don't need to worry about studying

Fatty Wang is a man of action.

In order to save Lin Bei, he even gave up his favorite chicken leg and ran straight to a teaching building.

For the sake of his brothers, he is absolutely serious. He won't go through fire and water for them, but he is willing to abamdon his chicken leg.

At the same time.

On the other side.

Lin Bei went straight back to his seat in the classroom.

However, after he sat down, he did not immediately turn to his physics book, but picked up a math paper.

Without much hesitation, he started working.

Don't ask why.

That is, this is the homework assigned by the mathematics teacher Yu Huatian (Hell Tian). I have to do it. It is a good opportunity to test my true ability.

Although due to his level

He is a beginner in mathematics and can scores around 120 points in exams.

But theory is theory, and practice is practice.

Because the difficulty of different test papers varies, there are no very strict standards.

If the test paper is easy, a beginner student can get a full score of 150 just like the top students.

But if the test paper is extremely difficult, the top students may be able to get close to full marks, but the beginners may not even get 120 points, maybe 100 or even below.

After all, even if you are familiar with the knowledge points the experience when doing the questions is completely different.

It would be better if it was Chinese or a foreign language.

But in mathematics, even if the knowledge points are the same, the test makers have ten thousand ways to set traps in the questions.

If you are not careful, you will be in trouble.

If you don't do enough exercises, you won't be experienced in the field, and you won't know the routines by heart, and you won't become an elite soldier after hundreds of battles.

A so-called top student may get 140 points in today's exam, 120 points in tomorrow's exam, and only 99 points in the day after tomorrow's exam.

And this is the math test.

After a quick glance, Lin Bei realized that it was not too difficult. They were all basic questions that tested the students' foundation.

What Lin Bei is best at is the basics.

After all, he knew all the contents of math books by heart, and his theoretical foundation was very solid.

He may not be able to answer questions that are too complicated and difficult, and even if he does, he will have to think hard about them for a long time.

But are these basic questions difficult for him?

With his ability to draw inferences from one instance it is asa easy as just to use three fingers to pick up snails and catch crabs in bamboo strips. It's easy and sure!

So, he did it quickly.

A normal exam takes two hours, but he finished the last question in less than an hour.

It's just like when Stephen Chow performs the Eighteen Dragon Subduing Palms, it's done in one go, extremely fast, and extremely handsome.

As for the last question.

[Given function f(x)=lnx+ax+2 (a belongs to R). ]

[1]Discuss the monotonicity of f(x). ]

[2]If g(x)=e^xx^2 and when x belongs to (0, +∞), f(x)≤g(x) always holds, find the maximum value of a. ]

This question.

The Lin Bei of the past would definitely not do that.

But for Lin Bei now, isn't it just a piece of cake for him.

I won't say much about the first question.

Anyone who eats three peanuts... ahem, anyone who has read some books and learned this knowledge will know it.

Let's go directly to the second question: find the maximum value of a.

The same thing.

This test paper is really simple. It is just to test students' basics, including this final question.

Even the second question of this finale can be easily answered as long as students have a solid foundation.

There is even more than one solution, at least two or three, such as critical tangency and tangent scaling.

But Lin Bei didn't use these.

He used a simpler approach.

That is the heterogeneous method.

Everyone knows about the heterogeneous method!

After all, it is well known and can easily solve the finale of derivative problems which are isomorphism, heterogeneity and scaling.

He wrote....

[Answer: Because e^xx^2-lnx-ax-2≥0, it is always true for 0＞0, so it is also true when x=1. ]

[If we substitute x=1, then e-1-0-a-2≥0, and a≤e-3, which is the necessity pathfinding compliance. ]

[Re-verify sufficiency.]

[When a≤e-3, substitute into the above formula. ]

[You can first simply scale the formula into several non-negative numbers, that is, e^xx^2-lnx-ax-2=（x-lnx-1）+(e-3-a)x+e^xx^2-(e-2)x-1. ]

[Because x-lnx-1≥0. ]

[(e-3-a)x≥0. ]

[e^xx^2-(e-2)x-1≥0. ]

[So the above scaled expression is ≥ 0, and the equal sign is obtained when and only when a=e-3, x=1. ]

[So the maximum value of a is e-3. ]

You read it right, this is how we answer the second question.

Simple, too simple.

As long as you learn heterogeneity and remember some common scaling formulas, this problem is really very simple.

Apart from the basics, the rest is still the basics.

Less than three minutes.

Lin Bei handled it perfectly.

On the contrary, he felt that it was not satisfying at all and he really wanted to do another... one hundred or eighty sets of papers to be satisfied.

However, he restrained himself.

It's a long time, don't rush.

After some time, Lin Bei stopped answering questions and put away the colorful eternal pen.

"Ding, math improved to 1%."

Lin Bei: "…"

"After finishing a math test, my math level only increased by 1 point. It's far slower than before?"

"It seems that subsequent upgrades will indeed become increasingly difficult."

"It's not that a hundred similar papers can elevate me to the level of a god of learning. Even a thousand or ten thousand papers won't do that."

"I need more effective questions to help me fill in the gaps. Otherwise, my upgrade will be extremely slow."

"What a pity..."

"I didn't have time to ask Zhao Qinghan for a notebook and a book of wrong answers this morning, otherwise I could have saved a lot of time..."

For some reason, Lin Bei thought of Zhao Qinghan.

But the next second.

He shook his head and stopped worrying about it.

There is no need to rush with the notebooks and the book of wrong answers for now. It won't be too late to go find Zhao Qinghan after he has finished all the subjects to level 7.

so...

He took out his physics textbook again and prepared to continue to pamper his physics book and try to upgrade it by noon. After all, he still had to take care of the three subjects of external chemistry and biology in the afternoon and evening.

Fortunately, he has the system in his body and his physique is far superior to that of ordinary people, otherwise he would not be able to bear the high workload for the whole day.

And his time is also very tight.

Twenty-four hours a day.

He wished he could break it into forty-eight hours.

However, that is not very realistic.

The only way is to make the most of every minute and every second to read.

But just at this moment.

Suddenly, a soft, sweet female voice sounded in my ears: "Hey, Lin Bei, didn't you take a break at noon?"

Hearing this.

Lin Bei raised his head and saw a very cute figure walking towards him.

Zeng Xi, class committee member.

He is also the top student in the class. He usually makes a living by reading and doing exercises. He is nicknamed the light of Class 4, which is completely opposite to Lin Bei, the shame of Class 4.

Not only that, Zeng Xi is also the class beauty.

She is a little over 1.6 meters tall, with a slightly round face, but not fat. On the contrary, she is very sweet and cute, full of lolita feeling. Everyone who sees her wants to reach out and pinch her.

If there wasn't another academic goddess named Zhao Qinghan in the school, this would have been the most beautiful girl on campus because of her perfect looks and strong abilities.

In fact, Zeng Xi can also be said to be the school belle.

But no matter whether she was the class beauty or the school beauty, Zeng Xi rarely talked to Lin Bei in the past.

After all, the two are worlds apart. Although they are in the same class, they are not in the same world at all!

But today.

Zeng Xi actually took the initiative to talk to me?

This is really the eleventh book, incredible!

As far as I can remember, the last time Lin Bei (original body) talked to Zeng Xi, it seemed like a long time had passed, right?

As a student committee member, Zeng Xi has the responsibility to help students in the class improve their grades, such as Lin Bei and several other poor students.

But Lin Bei was a hopeless case in the past, who took people's kindness for granted and simply lost their helpings.