"What the hell is going on, tell me quickly." Sure enough, Li Hu was still curious, and inadvertently wanted to know the answer to the matter.

At this time, Cheng Biting Tie glanced at Niu Zihao, he wanted to laugh but endured it, let me say, "Teacher Wu heard that you and Wang Xiang are missing, because Wang Xiang's parents are both working in other places, it is inconvenient to come over, so he called your father over and said that you should go home for a month of reflection and wait for the midterm exam before returning to school." ”

"Ah, that's bad." Li Hu clutched his hair, as if he was in pain, youth was really made of troubles, but what he didn't realize was that all this was made of lies, and the creator of this plan was Niu Zihao.

Li Hu's Arthur has been hanging up for more than two minutes, but this has long been unimportant. If he hadn't saved Wang Xiang, maybe he would have been able to escape this catastrophe, but now, I don't know what kind of situation Wang Xiang is.

"Wang Xiang, he was sucked into the computer, do you believe this?" Li Hu didn't want to talk about it, and he was afraid that Niu Zihao would gossip, but this is the case, so what's the matter if he says it.

I saw Niu Zihao say a few words to Cheng Biting Iron next to him, and then Cheng Biting Tie left very interestingly.

"Li Hu, I believe what you say, but the head teacher doesn't necessarily believe it!" Niu Zihao looked at the computer game interface in front of him, let Li Hu sit next to him, and he was having a lot of fun.

"Beat Houyi, didn't you see him hiding in the grass, stupid." Niu Zihao picked up the mouse and killed it directly, as for Wang Xiang entering the computer, he was not surprised at all, even a person like himself could be possessed by the Xueba god-level system, so what else was impossible.

Seeing Niu Zihao playing a game, Li Hu, who was looking stupidly on the side, rolled his eyes, and thought of a clever plan, where he was playing, if the teacher asked, it was Niu Zihao who asked him to play games in the Internet café, but I arrived a few hours earlier than him.

"Brother, what do you think, don't be sad, what's there you can't think of?" Niu Zihao handed Li Hu a piece of chewing gum, "Look what scared you, I lied to you about calling your parents just now." ”

As soon as he finished speaking, Li Hu was stunned on the spot, and the mood he showed was angry and happy. The angry thing is that Niu Zihao deceived him, and the happy thing is that he deceived well, if this is true, then he will definitely go home without the pain of pumping his ass with the sole of his shoe, just like pumping the bottom of the kettle.

Chewing a big bubble gum in his mouth, Li Hu inadvertently asked again, "You still eat bubble gum, isn't that what girls like to eat the most?" ”

"It's a girl, Gao Yaxuan gave it to me." Niu Zihao was playing a game, and he didn't expect this to come out of his mouth, "That, I memorized the text, and she gave it to me." ”

"In this way, you don't have to be so secretive, I know all this, I'm from here." Li Hu showed a gossipy smile, he also felt that things were not as simple as he imagined, there must be something greasy in this, "Then when I see Gao Yaxuan in the future, do I have to call her sister-in-law!" ”

"Don't talk nonsense, if Cheng Biting Iron hears it, I promise not to kill you." Niu Zihao grabbed Li Hu's hand as if twisting a twist, "You take back what you just said, and you can't say it again in the future." ”

After thinking about it, he actually wanted Li Hu to call Gao Yaxuan his sister-in-law. But if Li Hu really called it like that one day, would Gao Yaxuan be angry, and if he couldn't play with himself in the future, Niu Zihao didn't dare to continue thinking about it.

Cheng Biting Tie came to the place where the network administrator was located according to Niu Zihao's meaning. His purpose was to call up the surveillance video to see how Wang Xiang disappeared.

"Okay, keep back, back to where the two of them just entered." Cheng Biting Iron said, and gradually discovered the incredible picture in the video.

The two of them did not enter the Internet café at the same time, and one of them entered the toilet first. Because the camera pixels in the Internet café are not too high, and Li Hu and Wang Xiang are both wearing the same school uniforms, it is difficult to accurately tell who is who is the two of them. In layman's terms, the two of them are the same person, at least as seen from the surveillance.

Then, he was about to watch it again, but what appeared on the surveillance screen at this time was only the black and white style of snowflakes, similar to a TV.

As soon as the chain fell at the critical moment, it seems that someone is specifically engaged in sabotage. As for who it is and what exactly he wants to do, it is still unknown.

"Boss, do you have any other surveillance cameras here?"

When the images of the other cameras were called up, the network management was also puzzled, and it was still the same as the original pattern, and it still did not display any useful information.

"You say, could it be a line failure or a camera failure?" Cheng Yantie is trying to guess, after all, he has also learned a lot of useful knowledge in the book, such as Goldbach's conjecture. Although he is not very good at making conjectures, he still named the hypothesis he just had, called Cheng Biting Iron Conjecture.

"No, if it's a line failure, then the image won't come out directly on the display screen, and now it should be interfered by a super electronic virus." The network administrator made her conjecture, and it was obvious that Cheng Biting's conjecture had long been untenable.

"Then you say that this Li Bai is Wang Xiang?" Niu Zihao asked.

"That's right, it was supposed to be the hero I chose, but I didn't expect to be preempted by him, it's really unreasonable." Li Hu now just wants to kill Arthur fiercely, but the other party is too strong, so he can only think about it.

"Hey, why did you jump out of a question after pushing this highland tower?" What makes Niu Zihao wonder is this, why is Honor of Kings this way to play, is it testing my IQ? Don't be afraid, I have a god-level system that can solve any problem.

What was shown on the computer screen was a compulsory high school math problem after Arthur had just toppled the enemy's Mid Lane Highland Tower. Niu Zihao is very sure, as long as he solves this problem, it will be easy to break the crystal.

He first skimmed through the questions roughly, and saw that the position of this question should be the penultimate question of the test paper, which is really a problem!

In fact, the more difficult the question, the more challenging it will be for Niu Zihao, which is also conducive to the cultivation plan of the top student.

The known functions f(x)=loga(2x+1), g(x)=loga(1-2x)(a>0 and a≠1),

(1) Find the domain of the function F(x)=f(x)-g(x);

(2) Judge the parity of F(x)=f(x)-g(x) and explain the reasons;

(3) When determining the value of x, there are f(x)-g(x)>0.

Meaningless, Niu Zihao stared at the topic, and a series of analyses and calculations had already begun in his brain.

a>0 and a≠1 in the problem are actually qualifiers, which are also the range of the base a in the logarithmic function.

Here it is necessary to understand the interaction between exponential and logarithmic formulas and related concepts: ax power=N→logaN=x, although it does seem a bit complicated, it is better to look at the simplest first. The first ax power = N is a junior high school student, but if you list this item to the x power separately, it becomes the logarithm of high school.

Imagine that if a=1, any power of 1 is =1, log1N=x, and substituting the formula 1=1 has no meaning in itself. The most basic property of logarithms is that there is no logarithm between 0 and negative numbers.

After thinking about these things clearly, since a is a number greater than 0 and not equal to 1, then the range of values of N is greater than 0. N may wait for 1, for example, when x=0, the power of 0 of a is 1.

Looking at the role described in the title, there are 2x+1 in the f(x) function and 1-2x in g(x), to make the function meaningful, there is {2x+1>0,1-2x>0,2x>-1,x>-1/2,-2x>-1,x0, then loga(2x+1)-loga(1-2x)>0, that is, loga(2x+1)>loga(1-2x).

At this time, Niu Zihao suddenly thought of the image and properties of the exponential function.