Cheng Nuo's speed of doing questions is very fast.

The first ten multiple-choice questions and the last five fill-in-the-blank questions, Cheng Nuo hardly spent much energy, and it took about ten minutes to complete them all.

The next six big questions. They are trigonometric functions, solid geometry, probability, sequences, analytic geometry, and derivatives.

These are all common types of questions in exams, but the difficulty of the questions depends on the level of the teacher.

Obviously, Uncle Ge's ability to solve questions has been tested by several generations, and it is definitely as difficult as it can be.

Try to make the questions as difficult as possible within the scope of the exam!

This is Uncle Ge's criterion.

I'm not afraid of dying of you, I'm afraid of being hard and not crying for you!

Cheng Nuo shrugged, flipped the test paper to the back, took a sip of water comfortably, and then pulled the untouched scratch paper in front of him.

Big question, let's go!

Let the function F(x)=sin(wx-π/6)+sin(wx-π/2), where 0 is less than w and less than 3, and F(π/6)=0

(1) Find w

(2) The abscissa of each point on the image of the function y=F(x) is elongated to 2 times of the original (the ordinate is unchanged), and then the obtained image is translated to the left by π/4 units, and the image of the function y=G(x) is obtained, and the minimum value of G(x) on [-π/4, 3π/4] is obtained. ”

This is a very basic trigonometric problem.

Cheng Nuo doesn't even need to calculate on scratch paper. Calculate the correct steps to solve the problem directly in your head.

For the rest, all Cheng Nuo needs to do is to "copy" the answers in his mind on the answer sheet.

............

The exam time is passing by minute and second.

During the two-hour math test, even if you take out a set of test papers of ordinary difficulty for the candidates to do, before the bell rings at the end of the exam, whether it is right or wrong, the candidates who can complete all the questions on the test paper may account for 10% of the number of people.

Not to mention this year's set of topics. Compared with previous years, I don't know how many grades of difficulty it has.

Even the top student groups that often rank first in grade exams don't even have a 50% certainty that they can complete all the questions.

Even Old Tang, a few days before the exam, specially told everyone in Class 18.

If the math test paper is too difficult, try to pick up what you can do. If you don't know how to do the question, don't be an iron-headed baby, and don't regret it, just skip it! Just as if there is no question on the test paper, don't care about him first.

If there's still time left, go back and try again. If you don't have time, just write something and get a formula score.

The final finale is a big question, strategic abandonment!

Generally speaking, the difficulty of the last question is the most difficult in a set of papers.

The first question is normal, and it can be calculated if it is calculated. As for the second question......

It can directly make you doubt life!

There are so many delicate questions in the finale, and there are no math tyrants who bend their waists! This sentence is not just a joke.

............

The clock is in the 30th minute.

While other candidates were still struggling with choosing or filling in the blanks, Cheng Nuo had already come to the last question.

This is a question about derivatives.

"It is known that the function f(x)=(x-2)e^x+a(x-1)^2 has two zeros.

(1) Find the range of values of a

(2) Let x1 and x2 be the two zeros of f(x) to prove that x1+x2 is less than 2. ”

At first glance, the question is very simple, and the conditions and questions given are concise. But in fact, the difficulty of this question is not small, and the first question alone requires a lot of calculations.

But......

He is strong, he is strong, and he is treated as a melon skin!

He let him go sideways, treat him like a melon skin!

Cheng Nuo has won the true inheritance of Guapi Dafa.

In front of him, all math problems are nothing.

"This problem is directly based on the Lagrangian median theorem, plus Peano's remaining Taylor's formula, and then ......"

Cheng Nuo muttered in his mouth while calculating in his mind.

It is worth mentioning here that after some reform of the college entrance examination system, candidates are allowed to use solutions outside the scope of the high school syllabus when answering science questions.

Give a chestnut.

The law of Lobida, as we all know, is a law of seeking the limit.

The infinitive value is determined by the limit values of the derivatives of the numerator and denominator respectively.

In derivative problems, this kind of problem of finding the posterior limit of two numbers is very common.

If you use the Lopida Rule, you can easily get the answer.

Can......

The Lobida Rule is not part of the high school syllabus, but is a formula that can only be learned in college high mathematics.

Previously, the Lobida rule was not allowed to be used in the college entrance examination. Once used, two points will be deducted.

But what is very painful is that if you don't use this Lopida rule, it will take a lot of extra steps and time to solve the answer in an extremely complex way.

Do you choose to deduct two points, or do you choose to spend more time?

This is a dilemma for top students.

However, after the reforms, this situation did not exist.

For the questions of the college entrance examination, you can use the knowledge points of the university to do. Even as long as you know, you can do it with the knowledge points of graduate school!

However, there is also a certain amount of risk associated with doing so.

If the answer is correct, it is good to say that the grading teacher will look at your solution steps to see if the over-the-top knowledge used is reasonable.

The answer is not right, I'm sorry, even if you use the super-outline knowledge in front of you well, no matter how seamless it is, it's still ...... Zero points!

Because if the result is wrong, the grading teacher will not look carefully at your solution steps, let alone have the leisure time to study which formula you are using.

Therefore, unless there is really not enough time, in order to save time, some people will try to use the knowledge beyond the curriculum.

And Cheng Nuo is good, not only did he use it, but he also used almost the entire test paper. There is no harm in the slightest point for the wrong answer.

...............

"It's over, it's over!"

Cheng Nuo put down the last stroke on the test paper, put down the pen, and slowly laid the test paper neatly on the table.

His hands slowly pressed down in the dantian and exhaled lightly.

Raised his wrist and looked at the time, 15:41.

Only 41 minutes have passed since the start of the exam.

Cheng Nuo looked up and looked around the examination room, and found that almost all the candidates were doing questions with their heads down, some were scratching their ears and cheeks anxiously, and some were sweating profusely writing and drawing on scratch paper, anyway, no one showed a very relaxed look.

Cheng Nuo moved the chair back, found a very comfortable position to lean on the back of the chair, crossed his legs, picked up the thermos cup placed on the windowsill, unscrewed the bottle cap, blew the hot air gently, and took a small sip.

"Ah~~"

Cheng Nuo groaned comfortably, squinting his eyes, looking comfortable and couldn't be more comfortable.

..................

PS: The less than number is harmonious, and only words can be used.

The college entrance examination plot will end tomorrow!

Also, ask for recommendations!!