Teacher Xu, Please Take Care of the Reckless Students in Your Class

Wei Minghai's eyes lit up, and he immediately wiped away his previous thoughts.

"Swish! Swish..."

ps: The ninth more is here, asking for all support! .

10 My outstanding student can't hide it! [10 more offer!ask for all support]

如果|p1-p2|≤log（3）2，则的图像关于直线x=p1对称。

Because f(a)=f(b), the interval [a,b] is symmetric about the line x=p1.

Since the decreasing interval is [a, p1] and the increasing interval is [p1, b], the sum of the lengths of the monotonically increasing interval is (ba)/2.

Simple and straightforward!

Answer in seconds!

Zhang Ruiyun outside the door was dumbfounded.

After watching Wei Minghai's answering process, the students in the class were stunned for a few seconds before recovering.

"Gone?"

"That's it, it's gone?"

"No, it's impossible, right?"

"The last idea was written on a blackboard. Why is this idea so simple?"

"Tell me! Wei Minghai!"

Wei Minghai looked at Xu Heng.

Xu Heng stepped out of the podium and sat down in the empty seat behind.

"Teacher! Try a recliner!"

Xu Heng refused.

Wei Minghai started his story.

Zhang Ruiyun was confused, but he could be sure that what Wei Minghai said was beyond the scope of what he said!

"Wei Minghai really knows it! He didn't mean to embarrass Teacher Zhao!"

"He is very much like the genius who suddenly opened up the second line of Ren and Du in the martial arts novels!"

"Posted! Posted! Our Yunhu No. [-] Middle School is going to post it!"

"Be sure to tell the principal! Be sure to tell the principal as soon as possible!"

"In this year's Mathematical Olympiad, as long as Wei Minghai can have a good ranking, he can be recommended to a good university!"

"In this way, there are students who have been recommended in the fifth, so why not? No mention of the fourth and third middle schools, and the second middle school has not been recommended in the past few years! Who can't measure the weight of it!"

Zhang Ruiyun took three steps and took two steps and went straight to the principal's office.

"Principal? Principal Gu! Principal, are you there?"

Principal room.

Principal Gu Jijian is looking at the materials.

Zhang Ruiyun couldn't hide the joy on his face, and hurriedly knocked on the door and came in.

He was taken aback, "Director Zhang, what's wrong?"

Zhang Ruiyun, "Principal! Good news for you!"

Gu Jijian lowered his eyebrows, raised his hand and pushed his myopia mirror, "Director Zhang, it should be bad news, right? How is it good news?"

"I've heard about Teacher Zhang! You've put your popularity into the hospital, how can you say it's a good thing?"

Zhang Ruiyun was excited, "Principal! This is a good thing! Just be angry!"

Gu Jijian was stunned. It was the first time he had seen Zhang Ruiyun's unruly attitude.

"Director Zhang! What do you mean by that? Are you..."

Did it float?

Before asking, Zhang Ruiyun said, "Principal! I found that our school has a good seedling that can be recommended!"

As soon as this word comes out.

brush!

Gu Jijian stood up immediately, took out his glasses and stared at Zhang Ruiyun, "What did you say?!"

Zhang Ruiyun, "Principal, I said that I found a good seedling who can be recommended! It's in the second year of high school!"

Gu Jijian's first reaction, "Which class? Class 1? Or class 29? Do I have an impression?"

Zhang Ruiyun shook his head.

Gu Jijian knew the importance of a recommended spot to No. [-] Middle School.

Yunhu has one middle school, second middle school, third middle school, fourth middle school, fifth middle school, one middle school is the best, and fifth middle school is the worst.