Chapter 147： Hard-working thief boat

Chapter 147, the thief boat

After the conference, the students returned to work.

Class 15 students ran back to the classroom quickly, and this morning was a math task. Grasp the time to complete, and strive to be the first!

Cloud painting summarizes the knowledge points, and then publishes the tasks and exercises.

Zhai Zixuan glanced at the things that could not be done in the foundation. He left the side and slept.

But he just squatted, and someone immediately patted him: "Hey, second place, what does this mean?"

Zhai Zixuan took a sip of the mouth and looked at the subject. The brow immediately wrinkled: "You pig, -x? and (-x)? Isn't it the same thing? Is it the same thing? Satisfied? Pig brain!"

Zhu Yiqun smoked his mouth, but in order not to be the first one, he could only nod his head and nod. "Yes, how do you know that I am a pig? Cough, then you can tell me clearly?" Almost!"

Zhai Zixuan is speechless: "Assuming x is 2, -x?=-4; (-x)? is equal to 4..."

"It's not the same, but..." said Zhu Yiqun.

Yanzi Xuan glanced at him coolly. "Can you wait for me to finish?"

"Can, please!" Zhu Yiqun quickly and low to do small.

Zhai Zixuan is going crazy, so simple things don't understand, but he still writes on paper: "Just assuming X is a positive number, now assume that X is a negative number, such as x = - 2. Then -x? is equal to - 4; and (-x)? is equal to 4! Do you understand where it is different?"

Zhu Yiqun scratched his head: "It seems to understand..."

Zhai Zixuan directly lost his pen.

In less than a minute, he was awake again: "That... 3 powers, 4 powers, 5 powers..."

Xunzi Xuan vomits blood!

......

In the afternoon, it is physics. I just started to study physics in the second day, so I don’t need to review the first grade. I can learn directly from the beginning of the textbook!

Measuring this is relatively simple, pay attention to the unit and error of the measurement. What is easily confused is the reference object in the mechanical movement.

This understanding is easy to understand, and people who don't understand can hardly turn around. However, this must be learned because the reference object in mechanical motion is too important. In the future, physical calculations related to mechanical motion basically require the use of reference objects.

For example, the distance between the car driving backwards and the opposite car, as well as the relative speed, etc., need to use the reference object. So this chapter must be understood!

After Han Fangzhou explained, he used concrete examples to explain what is a reference object...

After the first section of the cloud painting, I will explain it to the class representatives after class. She will leave early.

Zhai Zixuan immediately picked it up: "I have something, I have to go first!"

Fucking, he came to sleep in 15 classes, but from morning to now, he did not sleep for a minute!

Cloud painting glanced at him: "Don't worry, the second quarter is the discussion class. You have to answer the questions of other students. This is the condition for you to come to class 15. After the second class, you can leave after the task is completed. ”

Zhai Zixuan: "..." Is he still able to leave the 15th class now?

The 15 groups of pigs, the simple problem of dying, he has to explain several times, a little bit clear, or not understand!

If you don't understand, you don't understand. He has been so many times that he is a pig. He is still not angry. He still licks his face and continues to ask the simple question of dying!

Annoying is bothered!

Yun painted a smile and patted the shoulders of Zhai Zixuan: "Come on!"

She had to hurry home, and said to the editor that today, "Qingdao Jingmeng" was put on the shelves, she had to go home and deal with something in advance!

The classmates who didn’t run away, instantly drowned in the sea of ​​the 15 classes of classmates~~~~

(End of this chapter)