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

When a>0, h'(x), the variation of h(x) with x is shown in the table below.

……

To sum up, when a∈(-∞, 0) U[1, +∞), the equation g(x)=a has real roots.

The idea of ​​solving the problem is very clear.

There is no fault at all. In the end, Xu Zongyun also concluded, "If you don't understand, you can learn more about the geometric meaning of derivatives, which are often related to analytic geometry and calculus."

"Or use the derivative to find the monotonic interval of the function to judge the monotonicity; if the monotonicity is known, find the parameters."

"Also, use the derivative to find the maximum value of the function to solve the optimization problems in life."

"Finally, you need to be more familiar with the combination of numbers and shapes."

Puff!Puff!Puff!Puff!

I don't know how to complain anymore!

Luo Dachuan was stunned.

Xu Zongyun, "Do you understand? Do you understand?"

puff-

What the hell does Luo Dachuan need to know?You have to understand a fart!

I have entered the society to work!

Tell me, do these things work for me?

In addition, the most important thing is that the last words you told me are for me to learn and watch?

Pooh!

Xu Zongyun, be yourself!

Luo Dachuan's face was stiff.

Xu Heng watched the whole process, almost laughing.

Yue Pingting looked puzzled, "???"

Xu Heng, what are you laughing at!

The corner of Xu Heng's mouth was drawn, and he came to Luo Dachuan.

"Okay! Zong Yun..."

"Mr. Luo, you should have something to do with me, right?"

"Let's talk upstairs!"

Geek!

Xu Zongyun was stunned!

Luo Dachuan was surprised!

He obviously behaved normally, but he didn't expect to be seen through by Xu Heng!

nonsense!

You are a person who is almost 30 years old, and you are doing these test papers here. Either you have a problem or you have a brain problem!

It's just that you are now a fan of the authorities!

Xu Heng ended this farce.

Take Luo Dachuan upstairs.

Xu Zongyun wanted to follow, but Yue Pingting shook his head to stop him.

Xu Zongyun stopped and froze on the spot.

"???"

Only then did he gradually realize the subtlety of the matter.

"It's over! He didn't come here mainly to find my brother, did he! Asshole! I seem to have been used! I was treated as a tool man!"

Xu Zongyun was disheartened.

"Hey……"

He couldn't help but look up upstairs.

Whispering, "What will they talk about up there?"

"I even came here specifically to find my brother..."

upstairs.

Yue Pingting came to the study with tea.

Treat guests with courtesy.

Luo Dachuan, "Thank you."

Yue Pingting smiled at him, and went to Xu Heng's side.

"If you need anything, call me."

Xu Heng, "Yeah."

Yue Pingting left.

The two were sitting face to face.

Xu Heng, "Mr. Luo, did you have to wait hard for me?"

Luo Dachuan smiled bitterly, "I didn't expect to be seen through by you at a glance! Huh... well, I won't pretend anymore. This time, I came here mainly because of you."

Xu Heng, "Tell me about it."

Now that we've cut to the chase, let's be blunt.

Luo Dachuan, "I'm from the FF live broadcast platform, and we are very interested in your telescope! Our live broadcast platform is doing a special live broadcast recently."

"The same handiwork, the kind of grandstanding, impractical, or things that everyone can think of and come at hand, have already..."

"..."

Luo Dachuan said.

Xu Heng was a little surprised and couldn't help raising his eyebrows.

"Probably, that's it, Mr. Xu, what do you think?"

He didn't mention any money during this process.

"In the future, if you have better ideas, we will come to buy them!"

"Of course, as long as no copyright is involved!"

When Luo Dachuan told himself that he was from the FF live broadcast platform, Xu Heng thought he was here to sign a contract with him.

But he said something like this.

While Xu Heng was surprised, he felt it was reasonable.

This is a brainy platform!

At the same time... and very sincere.

Luo Dachuan looked at Xu Heng with sincere eyes.

Seeing that Xu Heng refused to speak for a long time, he smiled, "Well, I think Mr. Xu has already guessed it, the purpose of our doing this is indeed to make friends with you!"

"After all, once you can do whatever you want in the future, we still hope to fight for it and cooperate directly with you!"

Be honest!

Although this was talking about cooperation, Luo Dachuan still said it all.

He felt that Xu Heng could also think of this.

After all, Xu Heng had already guessed the purpose of his coming here, and if he kept it secret, he would be insincere.

Xu Heng raised his eyebrows slightly.

"The last person who told me to make friends was as sincere as you."

Luo Dachuan smiled.

He felt like things were half done...

Xu Heng, "Then tell me about your live broadcast mode!"

Speaking of this step, Luo Dachuan knew that it was time to talk about money.

"As long as you nod, we will sign the contract. At that time, 200 million will be called directly."

"Afterwards, the income from the telescope made in the live broadcast room, and the next series of income related to the telescope, the anchor will take part of what he should take, and our platform's income will be half and half with yours."

"and also……"

Xu Heng, "Ah! Stop it! Stop it! I'm not asking about money..."

I'm a high school student, wouldn't it be too realistic to talk about money so early, wouldn't it be too unreasonable?

Am I such a worldly person? !

Luo Dachuan froze for a moment, then frowned slightly, "Then... what are you worried about?"

At the same time, Luo Dachuan was a little shocked. Looking at Xu Heng's expression, he seemed to have realized that Xu Heng was not interested in money...

But this is Versailles!

You know that we can't give less, so naturally you don't care about this.

It can be said that it is too late for others to please!

This FF live broadcast platform, if you have a chance, don't hurry up and give it more?

Xu Heng, "I mean, can the anchor you're looking for be able to do it?"

Ask softly.

But it is the deadliest crit!

This sentence touched the depths of Luo Dachuan's soul.

He trembled!

Xu Heng, "You may be in the group, and we made it within a few days after seeing what He Junfei posted, but the difficulty involved is beyond the reach of ordinary people!"

"First of all, if this person is not interested in astronomy, if he just works for money, I think it will be difficult for him to grind out an error of one ten-thousandth of a hair."

"This alone has dissuaded many people."

"Besides, if you are broadcasting live, it is impossible to buy the lenses directly... Then it is meaningless."

"Also, you can't steal the beam, right?"

Luo Dachuan listened carefully to Xu Heng's questions, and he considered them all.

"Mr. Xu, we have considered your doubts. I have a document here. I hope you can take a look."

Luo Dachuan made all preparations to come!

Xu Heng looked at it and expressed his satisfaction.

Luo Dachuan, "Mr. Xu, do you have any comments?"

Xu Heng stopped talking.

On the contrary, Luo Dachuan lost his mind in an instant.

"Forehead……!"

"Do you... have any other comments?"

Xu Heng smiled, "It's gone."

No no no no... gone?

Luo Dachuan was caught off guard.