"Ranking! Lie flat, the most feared thing in my life is the ranking."

Zhouka said with a smile: "What you have to be afraid of is the score. The total score of the two papers is 300. If you only get more than 30 points in the test, then the ranking will be good."

Classmates: "..." Heartbroken.

Lu Lin stepped on the bell and rushed into the classroom. As soon as he got to his seat, he said to Yunyan, "I want to understand why the question is wrong at noon!"

The others looked at Fang Yunyan with envy in their eyes.

Although Lu Lin is not as good as Kashen, he is still a big university tyrant. He usually has good grades and competitions. If he can study with such people, he will improve very quickly.

Besides, Lu Lin has a good temper and never tires of giving lectures. Usually, he will tell people until he understands them.

It is really popular with the students.

Lu Lin also thought about analyzing his thoughts with Fang Yunyan.

I saw another teacher from the teaching and research group come in and say, "The exam is over, come and put down the materials in your hands, everyone separates the tables, and there is a single table for one person."

This math competition test is completely based on the real competition process.

There are two papers in total.

The first paper has eight fill-in-the-blank questions and three answer questions, totaling 120 points. The test time is one hour and twenty minutes.

Send the first sheet first.

Yunyan got the paper and spent five minutes browsing the questions.

The first two fill-in-the-blank questions are sub-questions, giving three sets, union and intersection.

Although functions are involved in the set, the calculation is simple and basically no competition thinking is used.

The functional formulas of the next few questions are very complicated, and without clear logical thinking, they will basically devolve themselves into it.

What's more, every question has gotchas.

If you don't pay attention, you ignore some important reminder points.

Yunyan marked the traps he saw, and then started to calculate.

The words 'practice makes perfect' make perfect sense.

She swiped so many questions before going through the book, and when she came across a question that was consistent with the test site, she could see the purpose of the person who asked the question at a glance.

Eighty minutes, eleven questions.

It seems to be small, but with the amount of calculation and discarding the answers that are not within the scope of the question, Yunyan himself even got stuck in the tail of 80 minutes before finishing the last question.

After handing in the papers, there is a 20-minute break.

The class was lively again.

"Damn it! Yunyan, you have been calculating there all the time, and the pen is writing on the table, and my heart has been beating wildly."

The boy sitting behind Yunyan said, "I know those few questions, but the last two big questions don't have any ideas."

Lu Lin also stopped writing at the last minute before handing in the papers.

Someone next to him asked how he was doing.

Lu Lin said: "It's all written, but I'm not sure about the answer to the last big question."

"Six, Lu Lin."

"The prescription of these glasses is not in vain."

"You didn't find out. In the end, you, Yun Yan, and Ning Yue were the only three left in the class still writing."

Hearing this, Lu Lin turned to ask Yunyan, "Are you finished?"

Yunyan nodded: "It's stuck and finished."

It's been a long time since swiped the competition questions, and have a lot of hands.

Guangya sat in the first row, and when she heard them speak, she insisted on interjecting.

"Lu Xueba, you have good question-answering skills. It's too much to favor one another over another, just to talk about it to Fang Yunyan?"

Lu Lin frowned, he didn't even understand what Guangya's words were based on.

Guangya added: "In the school cafeteria at noon, everyone sees that you have to give a topic to Fang Yunyan if you don't eat, and now she can write a whole set of competition questions. How can you be such a person that favors one over the other? Everyone is in the same class. ."

Lu Lin is very good at sharing gossip, but he is not at all serious when arguing.

He explained: "I don't have good answering skills. It was my discussion at noon, not my talk."

Guangya looked at Fang Yunyan and vowed: "Then let's discuss it together."

Fang Yunyan stood up and smiled: "Okay, let's discuss the last fill-in-the-blank question on the paper just now. Guangya, do you still remember the question?"

The author has something to say: If you don't remember, you are not qualified to discuss.

Chapter 23

Guangya's face turned green with anger.

She didn't understand the three fill-in-the-blank questions at the back of the paper at all, she just thought those questions were obscure and not for people to do.

Therefore, even if she just finished the exam and collected the papers, she didn't remember what the questions were.

But Guangya doesn't believe it, she doesn't believe that Yunyan can remember.

She pretended to be calm, "As if you can remember?"

Yunyan was as serious as always: "Since I said it, of course I can remember it."

As she said that, she didn't wait for Guangya's urging, she just picked up a blank piece of paper and wrote down all the questions with at least three equations above and below.

"You can come and check."

The boy sitting behind Yunyan stuck his head out and glanced.

"Really! I have the impression that this is the problem of calculating the cosine value between MN and the plane by projection!"

After he finished speaking, he couldn't help but sigh, "As expected of God Y, he's awesome, I remember it all."

With his evidence, everyone else gathered around.

Looking at Yunyan's words on the spot is even more shocking than watching it during the live broadcast of "Having a Question".

"Yunyan's words are really atmospheric."

"I can recognize every word in this question, but when combined, I don't know what it means."

The title only talks about finding the cosine value. The auxiliary line has to be drawn by yourself, the projection has to be calculated by yourself, and even the angle function has to be flexibly changed.