Xueba, I beg you to go and escort him quickly!

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Should I give the steps...

My teacher looked at Xu Heng, and Xu Heng looked at him.

The two stared at each other.

Teacher, "Xu Heng! What do you think? Is it necessary for me to get this question on the blackboard?"

Xu Heng nodded, "Yes! It is necessary! Teacher, you have written a good question, very good..."

Teacher, "What about the problem-solving ideas? Do you have any unique insights?"

Ask for my opinion?

Xu Heng, "???"

Can I not say it?

What the hell is going on with all of you!

Xu Hengpi smiled, "Teacher, you have to have confidence in yourself! I am..."

I just wanted to say that I scribbled and scribbled casually, but I felt that it was too arrogant to say so.

Hey……

Uncomfortable!

Although it was true, Xu Heng still chose to keep a low profile.

The teacher was excited, "What are you?"

Xu Heng curled his lips, "It's nothing! Teacher, go to the blackboard and try it!"

"Fine!"

Seeing that Xu Heng didn't say anything, the teacher got up and wrote the topic on the blackboard.

The teacher next to him came over, "Xu Heng, what do you think is the answer to this question?"

Xu Heng refused to answer.

"Stop talking! I think you already have the answer in your heart!"

Xu Heng, "No no no! No! Don't talk nonsense!"

"What is modesty! Tell me!"

Xu Heng, "..."

When the question comes out, the answer is also given.

The professors nodded, and some shook their heads.

"No! This question is too simple! Put it up, it's too rewarding!"

"I think it's okay! It's better to put it in the first or second question!"

"No, no, no! Under normal circumstances, the previous topics are collection types. Isn't it a bit abrupt to put it like this?"

"I also feel a little awkward..."

"I don't think so. This question is different from the types of collections, and it just allows candidates to switch their thinking modes."

"..."

The two sides had a heated discussion.

At last!

Swish!Swish!Swish!

They all looked at Xu Heng.

"Xu Heng, what do you think?"

Xu Heng was taken aback, what do I think?

I'll sit and watch, or stand up and watch... all right?

"Ah...my opinion, this question is good, it can be used! This..."

"Okay! Then use it!"

"Okay! I have no objection!"

"Raise your hands to vote!"

"Okay, all passed!"

Everyone's attitude was unified in an instant.

The veins on Xu Heng's forehead popped violently.

your sister!

I haven't said why yet!

Are you being too hasty?

Xu Heng could see it!

This group of guys are so kind to me, there must be a demon for every reason!

lunch time.

Zhu Tiesen looked at Xu Heng, and couldn't help laughing, "Are you a little confused, why do these professors treat you so unusually?"

"Is it a little different from the mathematics professor you imagined!"

Xu Heng sighed, "Yes! I thought they were so cold!"

Zhu Tiesen, "Would you be surprised if I said that they are usually very cold?"

Xu Heng frowned, "Why did you say that?"

Zhu Tiesen, "This group of people are not ordinary people. Although some are approachable, some have weird tempers. This is obvious to all."

"But everyone is consistent in their attitude towards you."

"That's flattering!"

"Everyone looks at you like seeing an idol!"

As Zhu Tiesen spoke, he became excited, "I'm not exaggerating, what I said is the truth."

"Mathematics research has no age distinction. As long as you have the ability, even an old man like me is your fan."

Got it!

There are many more elderly fans.

"It's almost like Wu Liubai!"

Xu Heng's eyes lit up, "Do you know Professor Wu Liubai?"

Zhu Tiesen smiled, "Wu Liubai is a well-known professor in the literary circle. We at Peking University wanted to poach him back then! But it didn't work!"

"This person has feelings for Jingyun University..."

"I heard recently that he has found a wife..."

Xu Heng smiled. It seems that Wu Liubai and Ms. Meng Qingyin are making rapid progress!

Sure enough, if you love me, it's fast!

Xu Heng laughed while eating.

"Actually, student Xu Heng, you don't need to hide it, let alone take care of our feelings."

"Here, and it's still in a closed space."

"It's enough to say what you know."

"You've also seen that sometimes they fight over a question, so blushing and even swearing!"

"But it's only here, and it's just for the topic."

"Please don't put any burden on yourself, please tell me everything."

"We also want to learn from you."

What Zhu Tiesen said was very sincere.

Xu Heng was almost moved!

But after thinking about it, this is a pit, this is definitely a pit.

If I act too much, won't these guys go crazy? !

Or get a few questions of your own, let's talk.

Here, there is an unwritten rule that each person must give at least three fill-in-the-blank questions and one big question to qualify.

The more votes passed, the better!

"Okay, I'm done eating! You should think about it too!"

Zhu Tiesen got up to leave. As soon as this person left, another professor came over.

Xu Heng, "..."

Looking at the professor's posture, it seems that he wants to comfort himself.

"Professor! Professor Zhu didn't say anything about me just now! You don't have to rush to make a fool of yourself."

The professor was embarrassed, and then laughed, "." Student Xu Heng, am I acting so obvious? "

Xu Heng, "Otherwise?"

The professor laughed even louder, with a little embarrassment, "Hahaha..."

After lunch, everyone returned to the examination room.

The questions were put on the blackboard one by one.

Xu Heng also probably asked a question.

Once on the blackboard, everyone pays attention.

topic:

Suppose n is a positive integer, a1, a2, ... an, b1, b2, ..., bn, A, B are all positive real numbers, satisfying ai≤bi, ai≤A, i=1,2, 1, ..., n, and (b2b1 ...bn)/(a2a[-]...an)≤B/A.

证明：（（b1+1）（b2+1）…（bn+1））/（（a1+1）（a2+1）…（an+1））≤（B+1）/（A+1）.

This is a proof question.

After everyone saw it, they immediately took a breath.

The topic looks so simple!

Can understand.

But once the pen is written and the proof is given, the process is complicated.

After Xu Heng finished writing the topic, he looked at everyone, "Professors, what do you think?"

Everyone looked at Xu Heng, "Give me the proof process!"

Xu Heng, "Good!"

Swish swish!

On the blackboard, Xu Heng wrote down the steps eloquently.

Proof: According to the conditions, ki=Bi/ai≥1, i=1,2...