The next day…
"In general, a function such as y= ax ^2 bx c (a,b,c are constant, a 0) is called a secondary function. For example, y=-5x^2 100x 100x 60000 and y= 100x ^2 200x 100 are both second-order functions.。。。。。”
Damn it! The next day, my brother taught me the subject I hated the most, math! They came back yesterday. They were shocked when I told them about it. They also told me that they had found jobs: Yingling Mihua and Yingling Ziyue were going to work as waiters in the hotel. Qian Yu Meng Cai went to sell flowers, Crystal Flower Lina went to someone else's house to babysit, and the others went to buy flowers. Kudo Masayoshi couldn't find a single one of them because of his terrifying looks. But in the end, he worked as a security guard in a residential area. This position was not bad. He could scare the thief away. My brother was writing and talking on the top, but I was listening and dozing off below, the stars twinkling around me.
"Hey, hey, hey!" Seeing that I wasn't listening, my brother immediately shouted,"Don't sleep! Hurry up and listen to the class! Even if he didn't want to hear it, he had to!
Here, look at these few and determine which one is a quadratic function.”Thus, he wrote:
y=-2/1 3x^2y=2/1x^2-x^2 25y=2^2 2xS=1 t 5t^2
OMG! I didn't even hear my brother say anything just now. How would I know which one is the second order function! There was no other way. It was all up to luck.
"Let me tell you, luck is useless! This was mathematics, and one had to practice more to understand mathematics. Even if he was lucky, there was only a 10% chance.”
Yes, yes, yes! I know that your mathematics is the best in the universe, the grandfather of Archmedes! Chirp ~~
"Note: x and t are independent variables.”
What kind of bullsh * t bastard is Independent Variant! What the hell! Forget it, whatever.
"The first one is wrong!" In any case, the first question of a math judgment question was usually wrong. According to my deduction, I've done so many true or false questions, and the first question is usually wrong! My premonition is accurate!
(Everyone: Tsk! Blow ~~)
"Why?"
"Dang!" After being asked by her brother, she was completely stunned. Why would I know? He was instantly petrified. Seeing me like that, my brother sighed and shook his head.
"Look and listen: y is the dependent variable, x is the independent variable: The independent variable would change by itself and would not be affected by anything else.。。。。。”
"It's just like how cells repair themselves during sleep and are not affected by other factors, right?!”
“。。。。。。-__-||| b!~~~”The older brother paused for a few seconds…。(To put it simply, the independent variable is the cause, and the dependent variable is the result.) The independent variable was the dependent variable.）
"This question is correct." Brother could only say this.
"What? Right? Why!？”I was instantly struck by lightning! How was that possible! How could my sixth sense be wrong? How could I lose to a lousy mathematician!!! 55555!~~~ (┬﹏┬)~~~
"That's why I won't (just) tell you that mathematics isn't about luck.”
Why is it like this? As the saying goes,"Don't guess a boy's thoughts. You can't guess them." As expected, mathematics was like a boy. He couldn't guess it even if he wanted to. No wonder boys were so good at math.
(Everyone: This doesn't seem to have anything to do with whether boys know mathematics or not.)。。。。。）
Just like that, after 45 minutes of math class, he did a lot of practice questions that were even more difficult than the English version. Looking at the string of Arabic numbers and xy and z that looked like candied haws, he felt as painful as his brother looking at the " English sweep ". It could even be considered as excruciating! It seems that my brother and I are indeed somewhat similar. Speaking of which, I really want to eat it like a candied haws!
(Everyone: You've already treated it as a candied haws, but the only "fly in the ointment" is that you can only "draw cakes to satisfy your hunger"--you can't eat those "candied haws"--and looking at plums can't quench your thirst.)）
At that time, he had learned how to draw parabolas, the direction of the opening, the axis of symmetries, and the coordinates of a fixed point. He could still understand these. But I'm going to doze off again when I learn how to calculate the second order function. He only vaguely remembered that the example was like this:
------------------
For example, find the symmetrical axis and fixed-point coordinates of the quadratic function y= ax^2 bx c image
Solution: Take the right formula of y= ax^2 bx c, and you get
y=ax^2 bx c
=a (x ^2 a/bx a/c)(Everyone: ←←。。。。。。How could he remember it so clearly even though it was just a vague memory?!）
=a[x^2 2×2a/bx (2a/b)^2-(2a/b)^2 a/c]
=a(x 2a/b)^2 4a/4ac-b^2
Therefore, the graph of the quadric function y= ax ^2 bx c is a parabola, its axis of symmetries is the line x=-2a/b, and the apex is (-2a/b, 4a/4ac-b^2).
------------------
Haaah-I really want to jump down from "Hourglass Waist" and play "Transmigration"! What the hell! After sweeping through them, he could not find any pattern. Please, can't mathematics be more fun?! o()o Sigh ~~~~
(Everyone: -__-)||| |~~~。。。。。。Transmigration? He was even more powerful than Ding Jianzhong! PF! Ding Jianzhong: Note the magician, in 2012 at the Hunan TV New Year's Eve concert, the last second of the countdown passed through the Guangzhou Tower, also known as the "small waist")
(Everyone: Who doesn't know Ding Jianzhong? What nonsense.)）
@@~~~ Ahhh ~~ My head is exploding, I can't take it anymore!
"How are you going to learn like this?"
"Anything is fine, as long as it's not mathematics!”
"No! Mathematics was very important! If you don't learn, you won't even know what 20 yuan is when people say it's 20 yuan.”
“。。。。。。”Her brother loved to exaggerate.
(Everyone: Also, is there such an expensive dish?)!-__-||| ~~~）
"Then let's take a 10-minute break now. We'll have PE class later.”
" What?!"
"I'll go too!" At this moment, the door opened. It was Li Feng and Fei Xue Yuhong.
"We'll go too." Li Feng said to his brother.
" What are you guys doing?!"
"We can't just stay here and suffocate.
Alright! Stop blabbering. If you don't say it, then you'll agree. Feixue Yuhong, let's go."
"Yes!"
"Hey! Standing in the wind! (He's gone)
||| ||A few black lines and raindrops appeared on the back of his brother's head.||。。。。。。。。。。
The streets…
"Alright, now is a good time to practice running. Run 300 meters along here and be right back. You can't use more than 28 seconds!"
"Sweat!||| |!! This stretch of road is at least 600 meters. Although it's not as long as our academy, it's still very terrifying.
"This is already very good." The reason why her brother said that was because the academy's running rules were: [Distance: 800 meters] Male: 18 seconds, female: 28 seconds. There were many obstacles on the road. If one encountered an obstacle, the following situation would occur: Electric shock, burning, freezing, bleeding, being entangled by thorns, cramping legs, slipping for no reason.。。。。。If any of the above situations occurred, they would be disqualified immediately. Whether it was during the exam or the school sports meet, there would be such cases. Other than people and cars, there was nothing else on the road. Although he was not bad, he was still very afraid. I ran very slowly and often " ran into a wall ", so I suffered a lot in the academy. Brother, you're joking too much! -- Do you want me to be sent to the guillotine like Charles I?!---- NO!!!------
(Everyone: What a joke! How can you run like this!
But to accept the truth…
"That's not very good." Feixue Yuhong was a little worried for me.
"I agree! It was better to use the Penetration magic power. After all, Drifting Spirit and Die Nai always ran into a wall.”
Ah! Standing in the wind! Are you cursing me or helping me? ----
"Alright, go to a place and use your magic.”
"Alright!" So, I immediately ran to a residential building and conjured a chainsaw.
“Transparent-star! Piercing Speed Leap! Invisible magic power!" At this moment, a magic array appeared on the ground. Two strings of pearl-like blue and white light were emitted from the array through DNA. The light wrapped around me and my body gradually became transparent.
The Invisibility Magic Power can make you transparent, allowing you to pass through walls and enter the ground like a ghost. This way, even if I get hit by a car, I can only survive! Ah Meow Hahahahahaha ~~~~
(Everyone: Sweat||| |~~~又疯了!）
"Alright! Let's start, I can't wait." Although I was afraid of running, I was now invulnerable to any weapons because of this special " armor ". I was no longer afraid of electric shocks, body burns, ice seals, and all sorts of other " killing obstacles ". Not to mention that Ququ would be knocked away by a car, and it would be inevitable for rockets to come at me!
(So confident?!~~)←←？）
Are you looking down on me?
This book comes from：m.funovel.com。