"It's just a bad student, you see how I'll play him to death later. Pen, Fun, Pavilion www.biquge.info" Xu Xiaoshan raised his left hand and two fingers to support his glasses, with a look of wisdom beads in his hand.

Hehe, I'm the first in Xiaoshan's dignified class, and I'm afraid that I won't be able to handle this kind of midstream and downstream goods? Just kidding, when I speak, Ye Ming, you kid, are waiting to leave the scene in shame!

Seeing her nephew's confident appearance, Cheng Xue breathed a sigh of relief, she really deserves to be the first in the class, hum, Ye Ming, this is all your own fault, if you can't raise your head in the class in the future, it won't be any wonder to me.

"Haha, Ye Ming, no, it's Teacher Ye who came to the stage to give a lecture. Looking at Ye Ming passing by, some of the students who were sitting in the front row and were in the middle and upper reaches laughed one after another.

It's ridiculous that a poor student who has failed eight times out of ten in mathematics has the face to give lectures to these excellent students with excellent grades. The teacher is just mocking you, are you still not convinced? Now it's up to you to justify yourself!

Glancing at the surrounding classmates who were either making trouble or laughing and ridiculing, Ye Ming smiled coldly, and wanted to say I, Ye Ming, you are still 10 billion years early, now let's see who slaps whom!

Looking at Ye Ming who gradually walked onto the podium, Lu Xiaoran sighed after all, to be honest, even she was not very optimistic about Ye Ming, as a tablemate, no one in the class knew Ye Ming better than him, she didn't think Ye Ming was stupid, but teaching this kind of thing, it was far from being so simple, and it was far more than the foundation to overcome, on the podium, our students were facing the teacher alone, so we wouldn't be nervous, but if you walked on the podium, then the person you would face was not one, but fifty pairs of eyes of different forms！......

However, Lu Xiaoran's worries are superfluous, if it was Ye Ming before, he might have admitted defeat in Cheng Xue's scolding, but now Ye Ming is no longer what it used to be, in his opinion, the person who wants him to admit defeat does not exist in this world!

Since Cheng Xue was teaching a number series course before, Ye Ming didn't plan to go far, so he simply continued to use this unit.

Speaking of number series, this is actually a very old science, legend has it that around 570-500 BC the mathematicians of the ancient Greek Pythagorean school used to study mathematics on the beach, they drew dots on the beach or used pebbles to represent numbers. For example, 1, 3, 6... , which is recorded as (・), (∴)...

Since these numbers can be represented in a triangular lattice, they call them triangular numbers.

As a result of this discovery, the number of subsequent sequences in a certain order or regularity is called a sequence.

The formula of the earth's number series seems to be perfect, but in fact it is far less than one-ten-thousandth of the Heavenly Dome Continent.

The Heavenly Dome Continent has always been a world where mathematical formulas are the mainstream, and here, formula theory is like a hundred schools of thought in the pre-Qin Dynasty, which can be called an unprecedented grand occasion!

As one of the most used basic formulas among many formulas, the concept of number series is very perfect, not to mention that after countless years of inheritance and deduction, it has already reached an unprecedented peak!

A longer inheritance, a more perfect system, even if Ye Ming hasn't even broken the first-level sequence formula now, he has no reason to be timid, because he doesn't need to copy the theory of his previous life at all, with his current IQ, he is enough to reorganize a number series theory of his own, even if it is a brand new theory, it is not comparable to Cheng Xue, but he doesn't want to be too high-profile, because if it is too high-profile, he is afraid that no one will be able to understand his class.

"A sequence of numbers, a function that defines a domain with a set of positive integers or a finite subset of it, is a sequence of ordered numbers. Ye Ming's first words on the podium made the originally noisy classroom quiet.

Everyone couldn't help but look at Ye Ming with stunned eyes, and they only felt absurd in their hearts, lying silkworms, saying that he was really fat, and he really talked about the class? Even Lu Xiaoran's eyes lit up, and she was slightly surprised.

Cheng Xue couldn't help but be stunned, is this Ye Ming serious?

Ignoring everyone's gaze, the corners of Ye Ming's mouth raised a deep arc of meaning, and continued: "Every number in the sequence is called the term of this sequence. The number in the first place is called the first term of the series, the number in the second place is called the second term of the series, and so on, the number in the nth position is called the nth term of the series, which is usually denoted by an... ＂

What, isn't this what I said in class, and there's nothing amazing about it. Looking at Ye Ming who was gushing on the podium, Cheng Xue was slightly surprised.

She obviously didn't expect Ye Ming to really talk about the class, his demeanor was calm and calm, and he didn't look as nervous as ordinary students at all, and those who didn't know probably really thought that a teacher was lecturing.

But Cheng Xue was only slightly surprised, her eyes were more disdainful, she only felt that Ye Ming was picking up her own teeth, because of this kind of opening statement, she had taught for six or seven years no less than a hundred times.

Hmph, it's a bit of a brain, and I know how to pick up my teeth, but what you need to teach is not opportunistic, but more to rely on real materials, if you don't have that ability, even if you have the memory to copy the content of the class, it's useless!

"Teacher Ye, we have all heard what you said just now, so please talk about the key points. Xu Xiaoshan smiled disdainfully, the first thorn appeared on the stage, with a small piece of foot around him, regardless of the number of three, seven and twenty-one, laugh at him for a while.

Xu Xiaoshan had already made up his mind to pay attention, no matter what Ye Ming said next, he would directly disgust Ye Ming with ridicule, making Ye Ming upset and unable to get off the stage.

Maybe he saw that Xu Xiaoshan was deliberately making things difficult for Ye Ming, but Lu Xiaoran, who was at the same table, still helped in a timely manner: "Class leader, please keep quiet in class and don't disturb classmate Ye's lecture." ”

What Lu Xiaoran didn't know was that it was her seemingly ordinary behavior that made the entire classroom shake.

"Damn, I'm not mistaken, Lu Xiaoran, the frost goddess in our class, actually helped people speak? ＂

"God, I thought the person he hated the most was Ye Lin, I remember that a few days ago, Ye Lin splashed Xiao Ran with water for no reason, because he was also kicked out by the head teacher and scolded for two hours. ＂

"Could it be that Ye Lin has already attacked Xiao Ran!"

"Impossible! It's too late for classmate Lu to hate him, how can he have any relationship with him?"

"How do you explain the situation?"

...

The classmates in the class immediately discussed, after all, Lu Xiaoran's cold image of not smiling has long been deeply rooted in the hearts of the people, and the sudden occurrence of such a scene naturally makes them think about it, of course, the most unbearable thing for them is to watch a good cabbage being arched by a pig.

"Don't get me wrong, Xiaoran, I'm just expressing my opinion in the name of the student. Seeing that his goddess was actually helping Ye Ming speak, Xu Xiaoshan's self-confidence that he had just picked up couldn't help but be seriously hit, he smiled modestly on the surface, but there was a nameless fire in his heart, and he pounced, Ye Ming, when did you do it, this kid! You dare to tease my goddess Lu Xiaoran, she also helped you speak! You're finished! I'm angry! You just wait to be the joke of the whole class! Xu Xiaoshan looked at Ye Ming's eyes and wanted to eat him.

Facing the ridicule of Xu Xiaoshan and others, Ye Ming didn't care, nodded to Lu Xiaoran, and continued: "The number series is a special function. Its particularity is mainly manifested in its defined domain and value range.... ＂

"Hahaha, ridiculous, it's just nonsense!" Xu Xiaoshan was laughing, and suddenly felt that his voice was very monotonous, and he couldn't help but look around, and found that in addition to being laughing, none of the friends around him were silent.

"Hey, you guys... I saw that the people who had made an appointment with me just now were looking at Ye Ming, who was still calm on the podium, one by one, and didn't pay attention to himself at all. Xu Xiaoshan couldn't help but feel as if something was wrong.

Not only his classmates, Xu Xiaoshan grinned and found that even his aunt Cheng Xue was shocked at the moment, and kept babbling about "how is this possible" and "how could he know this".