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

Has she even started to change gradually?

Yang Kaixuan is not feeling well, "%￥#@#￥......"

Dong Xueyong and the others were even more at a loss.

Although none of them looked towards Xu Heng and Yue Pingting, their ears were pricked up and they listened carefully.

Xu Heng, "That's right...the second way of thinking about solving the problem is also correct...just..."

correct!

Both ways of solving the problem are correct!

I rub!

Is this woman cheating?

What the hell is going on with this Yue Pingting!

When we were still thinking about whether the first way of solving the problem was correct or not, you have already come up with the second way? !

People are more mad than people!

Yang Kaixuan held back his helplessness, not letting his emotions come out, he clenched his teeth, wanting to hear Xu Heng finish.

He originally thought that there was something wrong with Yue Pingting's second way of solving the problem...

Xu Heng wrote while talking, "If you change from here to this, isn't that the third way to solve the problem?"

puff-

Yang Kaixuan's scalp was numb.

He was wrong!

He was completely wrong!

He was dead wrong!

He now feels that it is wrong for him to sleep!

He should not sleep 24 hours a day, he wished for 48 hours a day.

He already felt that he was surpassed by Yue Pingting!

In the final exam last semester, Yang Kaixuan and Yue Pingting's total score was one point behind!

But now it seems that Yang Kaixuan has been surpassed and crushed by Yue Pingting.

He, "*%￥#@￥￥%..."

Yang Kaixuan is desperate!

The other students were also in despair!

The closer Yue Pingting got to Xu Heng, the greater the gap between her and Yang Kaixuan and Tang Yongxue.

Yang Kaixuan gasped, completely calmed down.

He wants to study, study hard!

Study like crazy!

To the restroom?

not going!

Hold on, go to the next class!

He brushed the questions like crazy!

The bell rang for the next class.

Many foreign language teachers came in, including Kevin.

This class is a foreign language class.

Kevin learned that this class attaches great importance to the trial class!

Not only the teacher is nervous, but the students are also nervous!

but--

There is one exception!

That is Xu Heng.

Kevin, "???"

Although he had heard the words of Wu Liubai and Xue Laiyun, he was still very surprised.

Isn't this a trial class?

Xu Heng, why are you still playing?

So many of our teachers are here!

The teachers and classmates in your class are very nervous, why are you still so calm?

Xu Heng didn't go too far in the whole process of foreign language.

And the teacher who gave the lecture almost regarded Xu Heng as air!

The foreign language teacher lectures, and the other students listen.

Xu Heng wore earphones and swiped his phone.

Kevin, "???"

The foreign language teachers were also very surprised, with exaggerated expressions.

After a class.

They didn't listen much to the class, they all stared at Xu Heng.

……

PS: Kneel for all support!The fifth one is here!Another day of more than 2 words!Four.

Chapter 292

Throughout the second half of the week, even on Saturdays and Sundays, there were teachers who appeared in the last row of the class on time.

Originally, the classroom was not big, and there were 60 students in the class, and there were things for cleaning at the end.

So the space left for teachers is very limited.

To be able to move a bench and sit down with 10 teachers is already amazing!

But sometimes, there are more than a dozen teachers at a time.

They said that they were helping class 25, putting pressure on class 25, and letting them get used to the pressure, so that they would not be nervous when facing teacher representatives from so many schools in the province.

But in fact, they just came to see Xu Heng.

From the previous few waves of teachers, they heard about Xu Heng's exaggeration, and many teachers wanted to see it with their own eyes.

Although everyone knows that Xu Heng sleeps and plays with his mobile phone during class, he has never seen it with his own eyes!

At the same time, they are also curious and want to know...

In a class like Xu Heng, how did the teachers manage to ignore Xu Heng?

Being able to take classes in Xu Heng's class is also a skill!

So more and more teachers came to watch.

But Xu Heng was not affected.

Play when you should play, and sleep when you should sleep.

On the contrary, the students in the whole class were more nervous than each other.

During evening self-study...

No teacher from class 25 came to class.

But the back was full of teachers.

There are even a few teachers outside the window.

Counting exceptions, there are more than a dozen teachers.

Students, "%￥#@￥%..."

"Teachers, you are enough! Are you up to it? What are you going to do?"

"Don't you usually go back to school after 5 o'clock?"

"Why are you still here! What are you doing?"

These teachers just pretend to have nothing to do, walk around the class, or just sit in the last row.

Even Xue Laiyun had a headache.

"Everyone! Isn't this necessary?"

"Although the principal said that you should come to our class to help out when you are free, but this is late for self-study, are you exaggerating?"

These teachers spoke righteously one by one, "What if the teacher who came to attend the class is also like this?"

"Right! We have to consider all possibilities, you know?"

"Not only that, but they may also make insinuations about the topics they learned in the morning... So, student Xu Heng..."

Mention Xu Heng!

All the teachers pricked up their ears and turned to look at Xu Heng.

fast!

too fast!

Xue Lai did the math to see that you guys are all here for Xu Heng.

But Xu Heng has no time to talk to them at this time.

He is giving a lecture to Yue Pingting.

topic:

Let a>0, as shown in the figure, it is known that the straight line l: y=ax and the curve C: y=x2, the abscissa of the point Q1 on C is a straight line parallel to the x-axis, intersecting the straight line l at the point P (n+1 ), then draw a straight line parallel to the y-axis from the point P (n+1), and intersect the curve C at the point Q (n+1).

(1) Try to find the relationship between a(n+1) and an, and find the general term formula of {an};

（2）当a=1，a1≤1/2时，证明∑（ak-a（k+1））a（k+2）＜1/32（求和上界n，下界k=1）

（3）当a=1时，证明∑（ak-a（k+1））a（k+2）＜1/3（求和上界n，下界k=1）

Three little questions!

The math teacher present was immediately confused.

Their first reaction was: Super class!

Seriously over the top!

"hiss……!!!"

One by one gasped, their eyes widened.

They couldn't help but want to swear, but some of them covered their mouths to prevent themselves from making any sound.

But deep down in my heart: "Fuck Fuck Fuck Fuck Fuck Fuck Fuck Fuck..."

They are afraid!

I really complained when I didn't pay attention.

Nima!

This question looks difficult!

Eighty percent of these are college entrance examination questions!