In this, Lu Bu knows best, if he really wants to compete, Lu Zhi will definitely not be Huang Yueying's opponent.
Because Huang Yueying has finished reading all the elementary textbooks that Lu Bu taught her, and now she has begun to study intermediate content such as one-dimensional quadratic equations and functions.
The knowledge level of the two is not at the same level at all.
Compared with Huang Yueying, Lu Zhi is humiliating himself.
Lu Bu was afraid that Lu Zhi would lose and would not be able to come to the stage, so he tried his best to prevent the two from competing.
However, the two parties, Lu Zhi and Huang Yueying, are incomparable, and in the end, Lu Bu is worth giving up.
Then the two made an appointment, and each person came up with five questions, and whoever answered more would win.
Lu Zhi asked the question first.
Lu Zhi first came up with two questions that were more partial in the arithmetic of the nine chapters, but Huang Yueying didn't need to calculate at all, and opened her mouth to say the answer.
This made Lu Zhi put away his thoughts about looking down on Huang Yueying, and the remaining three problems were all mathematical problems that he had summarized.
Lu Zhi is very aware of the difficulty of these three questions, even if it is himself, if it is the first time he encounters this kind of question, he is afraid that it will take a few days to solve it.
Lu Zhi didn't believe that this little girl could figure out the answer at all.
As a result, after listening to Lu Zhi's three questions, Huang Yueying walked directly into the classroom with a few people, then picked up a piece of chalk from the podium and wrote down Lu Zhi's three questions on the blackboard.
Huang Yueying said confidently: "Gong Lu, these are the three questions you came up with, I will answer them for you now, it will take half an hour at most."
Hearing Huang Yueying's words, Lu Zhi couldn't help but snort coldly and said: "Don't say half an hour, even if you are given half a year, you may not be able to solve it."
Huang Yueying smiled slightly, did not speak, and directly took the chalk and began to answer these three questions on the blackboard.
Next to them, Cai Yong and Cai Yan also fell into contemplation, thinking about the solutions to the three questions.
Lu Zhi watched Huang Yueying answer the question with interest, but when he saw the crooked, ghost-like numbers written by Huang Yueying, he couldn't help frowning.
What the hell is this?
You're drawing talismans, hey You think you can solve these questions by drawing symbols, don't dream anywhere And Lu Bu was smiling beside him and watching Huang Yueying solve the questions, these three questions have a certain degree of difficulty, probably rising to the difficulty of the first year of junior high school But for Huang Yueying, it's all a piece of cake.
As a result, Huang Yueying only took half an hour and half an hour to answer these three questions.
When Huang Yueying said the correct answer, Lu Zhi couldn't help but grow his mouth, completely stunned.
"Impossible, this impossible, how can you figure out the answer in such a short time You tell me, how did you calculate" Huang Yueying said proudly: "What's so difficult about this is actually very simple, the problem solving process is here, let me explain it to you."
Then Huang Yueying began to talk about Arabic numerals, eh, and now Lu Bu numbers, and then explained the application of unknown numbers.
Lu Zhi and Cai Yong's receptivity is slightly worse, but both of them are very smart, and after Huang Yueying's patient explanation, they can be regarded as accepting this new symbol in front of them.
Then after Huang Yueying explained the solution ideas of the three questions, it made both of them feel a sense of enlightenment.
It turns out that there is still such a way of solving problems in this world It turns out that after using this symbol, arithmetic has become so simple and clear It's a great invention Seeing that the two old men were completely shocked by herself, Huang Yueying couldn't help but giggle proudly, and then said to Lu Zhi: "Lu Gong, it's time for me to test you."
Lu Zhi nodded and said, "Yes, come on, the old man is waiting."
Huang Yueying nodded, and then began to give Lu Zhi questions, the first question was: There is a team of 100 zhang long, and when the team begins to move at a uniform speed, the herald walks from the end of the team to the head of the team at the same time That's right, the first question is the one that Lu Bu gave her at the beginning.
The second question went directly to the three-dimensional geometry, and Lu Bu couldn't help frowning when he saw it.
The third question is a number series problem, and Lu Bu doesn't know if Lu Zhi can understand it.
The fourth question needs to list a one-dimensional quadratic equation, and Lu Bu is hehe, does Lu Gong know how to open the square Well, the fifth question is finally a little more normal, because the fifth question is an example.
The fifth question is a series of data that Lu Bu needed to calculate when the Lotus Peak was burned.
Huang Yueying turned this example into a topic, sorted it out, and prepared to compile it into a lesson plan in the future.
"Okay, the five questions are out, and Lu Gong can start solving the problems now."
In fact, as early as when Huang Yueying wrote the title on the blackboard, Lu Zhi, Cai Yong and Cai Yan were already reading the title.
At this time, the three of them are still struggling to think about the first question This question seems simple, but if you think about it, it is extremely difficult.
The three of them pondered for a long time, but they never understood the essentials and couldn't find the solution to the problem.
Then the three of them reluctantly gave up the first question and began to look at the second question, and it turned out that Nima got the second question more difficult than the first As for the third question, the three of them were stunned for a long time but didn't understand it.
Give four numbers at the front and ask them to write the fifth number at the back according to the relationship between the first four numbers.
But the first four numbers, no matter how you look at them, you can't see what they have to do with them, how should this question be solved?
For the fourth question, I was barely able to find some ideas this time, but after calculating for a long time, I felt that I couldn't figure it out at all.
This little girl is weird Where did you think of so many elf weird questions come out Finally, the three of them looked at the fifth question.
Then they found that the fifth question, although a little more complicated, was solvable.
It's not easy to finally come across a problem that can be solved with the answer So the three of them began to calculate, and after a while, they gave the answer to the fifth question.
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Huang Yueying shook her head and said, "The answer is wrong."
Lu Zhi said in disbelief: "It can't be wrong, the three of us calculate the exact same answer, how can it be wrong?"
Huang Yueying smiled and said, "Your steps to solve the problem seem to be correct, but you have neglected a problem.
That is, when the Lu Bu lamp rises into the sky, the candle will burn shorter and shorter, so the Lu Bu lamp will rise faster and faster.
You didn't take this into account at all, so the calculated answer must be wrong. ” The three of them were speechless by Huang Yueying.
After a while, Lu Zhi asked: "But the values in this are changing every moment, and it is impossible to calculate them, and the problem you found out has no meaning at all."
Huang Yueying said with interest: "Then if I tell you, this topic actually comes from real people and real things":