Zhang Gaoxing was very satisfied with his performance on the first day of the college entrance examination. Overall, he felt very good about his performance on the first day of the college entrance examination and lived up to his three years of preparation.

Except for the last political subject exam, which question was the Minister of Foreign Affairs, he had no choice but to blind the names of the hundred families on the draft paper, and then he called Huang and filled in with Minister Huang, Zhang Gaoxing felt that he should have answered other questions well.

After the first day of the exam, Zhang Gaoxing moved into a small guesthouse in Dongyang County. This was a unified arrangement of college entrance examination numbers in the county. A large number of college entrance examination candidates flocked to Dongyang County. The guesthouses in Dongyang County could not digest them at all, so the room was opened to bed and sleeping. Zhang Gaoxing lived in a room of more than ten square meters, and each of them could only find a place to sleep.

In the guesthouse, these college entrance examination candidates naturally talked about that political issue.

Who is the Minister of Foreign Affairs? Someone went to the newspaper to buy international newspapers.

Oh!

Zhang Gaoxing was happy. He seemed to have encountered a dead mouse. That person was really Minister Huang, but he only answered a surname and didn't know how many points the teacher would give him.

The guesthouse is too crowded and there are so many people.

Moreover, there are not so many beds. In the middle of winter, the hardships are more difficult than sleeping in the basement in my later years.

But I feel resentful when sleeping in the basement, but now there is no one. In this era, everyone sleeps so much, and everyone can make do with it if they are gone.

night.

Zhang Gaoxing was struggling in peace all night long, with all kinds of snoring and snoring one after another.

I feel like crazy.

If you don’t let me sleep, don’t even think about sleeping in peace.

Old Man Zhang was black-bellied and touched a foreign porcelain basin on the face holder.

Then he secretly retracted his feet and pretended to be asleep.

The wash frame shaking.

Finally unstable.

"Clang!"

...

Many people in the room were awakened, and many people were not awakened by the foreign porcelain basin, but were also awakened by howling noises.

"What's wrong!"

"The earthquake?"

"Are you going to start taking math?"

...

Fighted several times.

It was still in the middle of the night that Zhang Gaoxing couldn't stand it anymore, and then fell asleep.

With half a panda eye on her face, Zhang Gaoxing entered the first math exam today.

1997 Higher Education Enrollment Mathematics Examination.

Question 1:

Solution to inequality|x|<5.

This question is simply a free score.

"Brush"

-5

I am afraid that students in this question will not know what the absolute value is, or do not consider the situation where x is greater than -5, and if they are combined, they will not get points for this question.

Because if x<5 is just wrong, it is obviously wrong. - at 5, but its absolute value is absolutely greater than 5. For junior high school mathematics, I am afraid that many people will not get points in this era.

Zhang Gaoxing was quite happy. He felt that he was very impatient when doing math. Unexpectedly, this math problem was much easier than he thought. He originally planned to get better in other courses, but he could get a good attitude when he could get a few points in math, but he got eight points and got a good start.

Question 2:

Qianjin Brigade responded to the great call for "greening the motherland", afforested 200 mu in 1975, and also knew that a total of 728 mu of afforestation was afforested in the three years from 1975 to 1977. What is the annual average growth rate of afforestation area in the next two years? This question is 10 points.

This is an application question, and you can only use equations to answer it at first glance, because I don’t know how many forests were respectively in 1976 and 1977.

Let's assume that one of them is x and the other is y, because they are finding the annual average growth rate, that is, the number x and y is not important, and the annual average growth rate is the same. In this way, several systems of equations can be obtained and then the annual average growth rate can be calculated. After Zhang Gaoxing thought about it this way, he started to answer the questions.

Solution: Suppose that afforestation will be made in 1976, and y mu of afforestation will be made in 1977.

Then: xy2oo728

x/2ooy/x

According to the transmutation method, x528-y is derived

Substitute the second equation and get (528-y)/2ooy/(528-y)

This is a quadratic equation.

But the number is so big that after a long time of resolving, Zhang Gaoxing vomited blood.

...

Question 3: Verify the Pythagorean law.

Zhao Gaohong taught Zhang Gaoxing this question.

I remembered that the girl came in the exam room. She knew she was in the college entrance examination. She had written a letter for half a year but didn't reply. Zhang Gaoxing was busy reviewing and developing the process of the construction of the wooden wood carving factory in the building society, so she didn't have the energy to write to her again.

At that time, she taught Zhang Gaoxing three types of proofs. Although there are more than a dozen types of proofs of Pythagorean Law, Zhang Gaoxing felt that learning three types was already very good. He chose to make four congruent right-angle triangles with a     b as the right-angle edge and c as the oblique edge. Then the area of ​​each right-angle triangle is equal to one-two ab.

Because aeB three points are on a straight line, BFc three points are on a straight line, and cgd three points are on a straight line.

Just prove that the quadrilateral eFgh is a square with a side length c, you can deduce the Pythagorean theorem.

After replying from missing Zhao Gaohong, Zhang Gaoxing answered the proof of the Pythagorean theorem in a daze.

Then I looked at the math questions behind and felt that there were so many questions.

Question 4: Decompose factors.

The fifth question is to find the system of equations.

The sixth question is to find the derivative.

Question 7 is geometric proof

Question 8 is all the eighth question, and there is also the ninth question to find the limit. The tenth question uses fixed integral points to prove it. I feel that there are a lot of math questions.

Then, when Old Man Zhang saw that there was still ninth and tenth, he was still absent from there and directly did the test. But did the questions feel bigger and bigger and stuck?

In the examination room, except for Zhang Gaoxing, the national college entrance examination mathematics was stuck. How to prove the Pythagorean law? The annual growth rate can be calculated. I don’t know the area of ​​the planting forest in 1976 and the area of ​​the planting forest in 1977 at all.

Liberal arts candidates have collapsed in the math subjects, and mathematics in science has made it impossible for candidates to find the north. It is a large complex of parabola functions. Parabolas are a difficult problem, but it is difficult to add. It is a collapse for the first college entrance examination candidates who have not been trained normally.

In the ninth and tenth question, Zhang Gaoxing racked his brains, but he still had no idea how to start. It was too difficult. Suddenly, he saw that he had to register after the ninth question. (If you don’t get the admission scores in this question, candidates can do their best).

Zhang Gaoxing: "..."

The teacher who sets questions is really good at playing. If you don’t do admission scores, why do you do it? He is the most famous writer in China in the world. He is known as China’s Charles Dickens.

The same is true for the tenth question (if you don’t do the admission score, the candidates can do it as much as possible). Grandma, Zhang Gaoxing was a false alarm, but the exam ended time was also here.

The invigilator finished collecting the test papers and exclaimed in the examination room.

"I'm finished!"

"Mathematics is too difficult, I have several questions that I haven't solved."

"Me too."

"Why is math so difficult, and there are so many questions?"

"Comrade Zhang Gaoxing, how are you doing in the exam?" Zhou Kaixin couldn't help but ask how they did in the exam after the exam.

"It's okay."

Looking at the entire exam room, only Zhang Gaoxing was very calm and was not stimulated by the difficult problems of mathematics at all.

He sighed.

"Comrade Zhang Gaoxing, you are so calm. I'm just about to do the last two questions. I don't have time anymore. I can't do math at all."

"The last two questions are non-test questions and are not included in the admission score."

"What?"

"I'm hungry, go for dinner... I'll have a good exam in the afternoon, and Zhou Kaixin."

The last geography exam in the afternoon, after taking it, the curtain of the college entrance examination that caused a sensation in the entire China in 1977 is about to end.
Chapter completed!