Crushing

Jiang Tianhao never thought one day that he would be crushed by a little girl.

looked at Lin Miaomiao's expression, as if she was saying: Eat with me, you are a younger brother in front of me.

And it seems that he is really a younger brother...

Lin Miaomiao is the senior brother, he is the second junior brother.

"X_X, master, I am despised."

It seems that Chen Fan's apprentices all have a characteristic, that is, they like to be coquettish, and Jiang Tianhao is also the same.

Jiang Tianhao hugged Chen Fan's arm and coquettishly, seeing that Lin Miaomiao and Deng Xiaoqi were furious, he said in unison: "Let go of the master!" ”

The girl is angry, and the sky is falling apart! Suddenly frightened, Jiang Tianhao left Chen Fan.

And Chen Fan felt amused and looked at the second daughter: "Let go of me?" Let you come? ”

Deng Xiaoqi was so embarrassed, she remembered Chen Fan's hand just now... No, I can't think about it, the charm of the master is simply unstoppable, and she clamped her legs to hide her predicament.

Lin Miaomiao glanced at Chen Fan provocatively.

It was about the third class in the afternoon, and Zhao Rongbao didn't know where to get the book, so he gave it to Chen Fan.

Chen Fan took a look at calculus, as well as the previous exam questions of the National Mathematics Competition.

Speaking of calculus, in everyone's eyes, it may be a kind of advanced mathematics, why learn calculus? The reason is simple, calculus contains most of the high school math knowledge such as functions, derivatives, tangents, etc.

A lot of the derivatives learned in high school, as well as other knowledge, evolved from calculus and were relatively simple.

Most of the students enter high school to learn this knowledge, and they feel very difficult.

Don't care, that's normal, because high school functions, derivatives and other related knowledge are all pulled out of calculus, very jerky, difficult to understand, it is equivalent to such a strange knowledge instilled in your brain out of thin air.

I have never been exposed to it before, and some students may think that it is very simple, but its essence is that even students with good grades may not be so clear, including teachers.

Don't blame the teachers, they are just normal graduates, and they are only responsible for telling the knowledge in the book and the knowledge outside the classroom, and they are not obliged to tell you.

When people become teachers, it is a professional obligation to teach you, after all, you get a salary. Being responsible for each student is a work ethic.

To put it bluntly, like most of the staff.

A profession is just a subsistence business. After all, behind the teacher, there are also a few families who want to eat.

High school, that is, the master leads the door, and the cultivation is in the individual.

I always give you a question, and you go back and draw inferences yourself.

The point of IQ for graduate school entrance examination is here.

After all, some students are lazy, some students are smart, and some students are diligent.

Teachers can't do everything, let alone calculus, they must understand?

Calculus is mainly studied in tangents, functions, limits, scoring, and differentiation.

The core idea is in, the function, the tangent.

And these two points are precisely within the scope of the two major college entrance examinations in high school. Countless questions arise from these two concepts.

The first theory of calculus was proposed by Newton, of course, the name is the number of streams, also called infinite series, which is a paper in 1671, but the core algorithm is already the same as calculus, Newton studied the path of known continuous motion, and found the speed at a given moment (differential method); The speed of a known motion is found as the distance covered in a given time (integral method).

Newton was so famous that he let the world know about this algorithm.

But then there came a learned scholar who contributed even more, and he contributed more elaborate notation, and in 1684 he published what is now considered to be the earliest book of calculus in the world, which had a very long and strange title, "A New Method for Finding Maximums and Tangents, and It Also Applies to Fractions and Irrational Quantities, and to Wonderful Types of Calculations of This New Method."

It is such an article that is quite vague in reasoning, but it has epoch-making significance. It already contains modern differential symbols and fundamental laws of differentiation.

Leibmudz was thus one of the greatest semiotics scholars in history, and his calculus notation, which is far superior to Newton's notation, has been used to this day, which has a great influence on the development of calculus.

When the initial symbol is spoken, some students will also be familiar with the Newton-Leibniz formula, which everyone should have seen in high school.

The National Mathematics Olympiad that Chen Fan is about to participate in has a large number of exercises, all of which are related to calculus, most of which are derivatives, functions, or a combination of functions and geometry.

Therefore, the knowledge of calculus is even more needed.

The book about calculus that Zhao Rongbao brought, Chen Fan immediately opened it and looked at it.

"Introduction, calculus involves the idea of limits... Common Symbols for Calculus... Newton-Leibniz formula.... Definite and Indefinite Integrals... Unary differentiation .... Folding geometric meaning.... ...... ordinary differential equations and partial differential equations"

Chen Fan flipped through a class in one breath and forcibly learned calculus, until the last class, he didn't even stop the extreme speed of his brain, during which he checked a large number of exercises in previous national mathematics competitions, and kept calculating in his mind to verify his conjectures.

The brain domain develops 11% of the brain, which seems to be a bit overloaded, after all, calculus is too difficult, this is advanced mathematics, and it is more than one height more difficult than the knowledge that Chen Fan is currently in contact with.

In other words, Chen Fan's previous high school math problems are too scummy compared to them.

A thick book of calculus was forcibly written down by Chen Fan.

Regardless of whether you can actually operate it, write it down first.

But the brain is also overloaded.

And Lao Zhao kept talking and talking on the blackboard, just like a monk chanting scriptures, nagging, making Chen Fan's head buzz, dazed, and actually fell asleep.

"Classmate Chen Fan, classmate Chen Fan?" Seeing Chen Fan lying down, Zhao Rongbao wanted him to refresh himself and get up to listen to the lecture, so he specially asked him to get up and answer questions.

Deng Xiaoqi, who was closest to Chen Fan, saw this and hurriedly poked Chen Fan's arm with a pen, cautiously, but couldn't call it at all.

Zhao Rongbao waved his hand helplessly, signaling that he didn't need to call Chen Fan, shook his head and said to everyone: "Students, don't study too late when you go home to study, otherwise your body will collapse, and you must pay attention to the combination of work and rest." ”

Lin Miaomiao was distressed

Hurriedly handed Deng Xiaoqi a pack of walnut crisp, and asked Deng Xiaoqi to put it in Chen Fan's desk, seeing that Chen Fan didn't get up, he thought about it and put another bag of jujubes, and finally when he took out the beef jerky, he hesitated for half a minute, but he still gritted his teeth and stomped his feet to give it to Chen Fan.

For the master, don't feel sorry for anything to eat.

His Majesty can bear it.

On the podium, Zhao Rongbao couldn't stand it anymore: "Okay, Lin Miaomiao, you listen to the class well, do you think the hotel is arriving?!" ”

"Hahahaha" all the students laughed.

"No, I'll see if I really sleep, I just want to sleep, and after I have food, I won't want to sleep!" Lin Miaomiao was caught red-handed, and said with a blushing heartbeat.

"Okay, let him have a good rest, he guesses he's really tired." Zhao Rongbao looked at Lin Miaomiao and couldn't laugh.

He knew that his students loved to eat, but he didn't expect that inside that desk, it was like a small granary, with everything.