reborn, there are officials, awake to the power of the world, drunk and lying on the knees of beauty.

Reborn, there are games to play. The sky is added, the magic sword is in hand, and the grass is fully served.

Anyway, I was reborn, some went to write novels, some went into business, some became stars, some became directors, but few of them took reading and studying seriously.

Everyone has their own karma, and everyone takes a different path.

Knowledge is power, and books are the ladder of human progress.

What Lu Xi wants to take is not the roads above. She believes that as a newcomer to socialism in the new century who has ideals, morality, education, and discipline, she should take the road of reading and studying, strive to absorb knowledge from books, and make contributions to the progress of mankind.

Of course, the ideal of studying for the progress of human society is lofty, but it is still a little far away from her.

Lao Tzu said that the wood of the hug is born in the end of the millennium; The nine-story platform starts from the soil; Great oaks from little acorns grow..

For the sake of lofty ideals, what she has to do now is to lay a good foundation!

To be practical, for Lu Xi, she studied hard, did well in the high school entrance examination, and was admitted to the provincial key middle school, so she didn't have to stay in this city anymore and live under the fence by looking at people's faces.

Napoleon said that a student who does not want to be a top student is not a good student, and a good student needs to study hard and make progress every day.

Determined to make progress every day, but Lu Xi's mathematics and physics are still sinking to the bottom, so she must find ways to improve them.

Lu Xi, who claims to be a man of action, sat down at the desk, picked up the pen, and set his eyes on "Mathematical Problem Solving and Methods".

I haven't done math problems for years, and I was a little excited to pick it up again.

Okay, let's look at the first question.

Well, prove that all three angles of an equilateral triangle are equal, and that each angle is equal to 60°.

Of course, the three angles of an equilateral triangle are all equal, and each angle is of course 60°, which is a bit too simple.

Lu Xi thought about it, and prepared to write the proof process on the manuscript paper.

But wait, how do you get started with this proof process?

At this moment, Lu Xi, who had not been in contact with math problems for more than ten years, found that his eyes were lower, and he didn't even know where to start.

Well, this question is so simple that you don't need to prove it, so let's look at the second one first.

Lu Xi, who was slightly sweating on his forehead, casually turned the page of "Mathematical Problem Solving and Methods" and moved his gaze to the second question.

As shown in the figure, ⊙P and ⊙O intersect at points A and B, ⊙P passes through the center of the circle O, and point C is any point on the optimal arc of ⊙ P (not coincident with points A and B), connecting AB, AC, BC, OC.

(1) Point out an angle in the figure that is equal to ∠ACO;

(2) When the point C is at what position on the ⊙P, the straight line CA is tangent to ⊙O? Please explain why;

(3) When ∠ACB=60°, what is the relationship between the radius of the two circles? State your reasons.

Then, Lu Xi felt that he had pounced, how could this brain be like a wrinkle removal injection.

She didn't expect that she would be so bad at this most basic elementary mathematics.

Big breasts and no brains?

Lu Xi, who was very frustrated, thought of such a word, and then subconsciously glanced below.

Xiaohe only showed sharp corners, it is estimated that it is important to judge by grams, so there is no way to talk about this big chest and no brain.

It can't be that you fell and broke your head out of the mutilation, right?

Lu Xi thought of this question and was suddenly a little worried.

Before Lu Xi didn't have a dove to occupy the magpie's nest, even if "her" didn't have a good math score, a paper with a score of 120 points and a score of more than 90 was still no problem.

There's no reason, when she comes, she can't even solve these two questions that seem as simple as eating and drinking.

Immediately afterwards, Lu Xi found that her head was empty of knowledge about mathematics, as if she had never saved it, which had to make her suspicious, fell from the building, and threw away all her memories of mathematics.

"It doesn't matter, it's just a little bit of elementary math, and it's a big deal to relearn it. I came into this world with God's will to be a great mathematician. How can a person who is destined to become the queen of mathematics be defeated by a few math mock questions for the high school entrance examination. ”

Xiongguan Mandao is really like iron, and now it is stepping forward from the beginning!

MAO ZHUXI TAUGHT US THAT EVERY DIFFICULTY IS A PAPER TIGER.

Lu Xi took a few deep breaths, put down the "Mathematics Solving and Methods" in his hand, and flipped through the desk to find the first, second and third junior high school textbooks, a total of six mathematics textbooks in three years.

Since there is no more, let's relearn step by step.

"Mathematics", the first volume of the seventh grade, has a total of four chapters. They are rational numbers, unary equations, preliminary understanding of figures, and the collection and sorting of numbers jù.

Most of them are conceptual knowledge, which is very vivid, and there is not much to think about. And even if you need to think, it's ridiculously simple to think about, like 1+1=2 computational problems.

You don't need to turn your head to complete the whole process from reading, to knowing, to understanding, and to be transparent.

This made Lu Xi's spirits lifted.

Learning, sure enough, must go from shallow to deep.

Excited, she took the momentum of breaking through the bamboo, and it didn't take much time to absorb the first volume of the seventh grade in one go.

This is followed by the second volume of the seventh grade, intersecting lines and parallel lines, plane Cartesian coordinate systems, triangles, binary equations, inequalities and groups of inequalities, real numbers, and six chapters.

The second volume has a lot more knowledge than the previous volume, but most of it is something that can find examples from real life, and it is not profound.

It didn't take much time for Lu Xi to understand it thoroughly.

During this period, she also ate a bowl of preserved egg and lean porridge at the request of her eldest brother Lu Pingsheng.

Preserved egg and lean pork porridge, the rice grains are rotten, the taste is delicious, the taste is smooth, fragrant but not greasy. But in comparison, I don't know why, Lu Xi, who has always regarded herself as a foodie, feels that math textbooks are more attractive to her, even if the things in these two textbooks are very shallow.

"Is this the gift given to me by God, the supreme mathematician?"

Lu Xi didn't know, but she enjoyed the magic and beauty of wandering in the ocean of mathematics very much.

"Lu Xi, are you deaf!"

Until a voice full of anger, resentment, and disdain woke her up.

Lu Xi turned his head and saw that at the door, a fat man with a height of one meter eight and a waist circumference of nearly one meter eight was slamming the door with his fat flesh palm, making a roar.

"What's the matter, sorry, I didn't hear that." Lu Xi didn't know what he had done to provoke such a fat man who would descend to the door and eighteen palms.

"Didn't hear that? How many times have I called you, and you have to break the door before you get out to eat? The fat man continued to roar, and at the same time, a pair of mung bean eyes that were almost submerged in the waves of flesh on his face glanced at Lu Xi.

Mathematics, Grade 8 (Volume I)?

Lu Xi has finished reading the first year of junior high school, that is, the upper and lower textbooks of the seventh grade, and is studying for the eighth grade.

"It's so stupid that I can, I'm going to take the high school entrance examination, and I'm still reading the textbook for the second year of junior high school. I advise you not to waste your time here and find a job to support yourself as soon as possible. ”

The fat man amplified the mockery in a serious tone, and then slammed it away, leaving before Lu Xi could react, and slammed the door slammed shut by the way.

Where exactly did the dead fat man come from?

Lu Xi was speechless.

(The power was out for most of the day today, so the update was late, and this chapter was written with a pen on paper.) The pen moves less, and the words written are stiff and ugly. This can't help but remind Sandwich of the fable in "The Oil Seller", a sentence - "Without it, only the hand is familiar". So, friends who watch "Fake Female Scientist", have you developed the habit of voting for recommendations, are you familiar with voting? In addition, although the first watch is late today, there will still be two watches, and the second watch will be on the night when the stars are sparse later. ）