How to break into a math book

Challenge failed? !

Wang Boyu couldn't believe his ears, trotted over to meet Tu Hua, and asked Ms. Y in disbelief: "He was the one who broke the finish line first, why did he fail in the challenge?"

Miss Y gloated and danced in circles on the ice: "If you fail the challenge, it proves that he lost!"

"But..." Wang Boyu frowned, and wanted to defend himself, but Tu Hua held him by his sleeve.

Tu Hua's expression was terribly serious, he didn't seem to be too dissatisfied or surprised by the verdict, his eyes kept darting back and forth between the track and Miss Y.

Soon, it was Wang Boyu's second round.Seeing the presence of the old god Tu Hua, Wang Boyu was anxious: "What should I do? You won't pass the level if you win, and you won't clear the level if you lose. How can you pass the level?"

Tu Hua stared at Miss Y, then turned his head to Wang Boyu and said, "Skate casually this round first."

Wang Boyu was under a lot of pressure. The rules of this competition were obviously not clear, and even the judging of the winner was not fair enough. He had to bite the bullet and continue skating. Could he just wait to be eliminated after three rounds?

Ke Tuhua sent Wang Boyu to the starting point with a confident look, smiled and said to Ms. Y: "I already know the way to win this game. I just want to ask you, if Wang Boyu wins you, will it be the two of us?" Can you pass all of them?"

Miss Y stared at him, a trace of panic and displeasure flashed across her face: "Why should I tell you?"

Tu Hua smiled clearly, and didn't continue to ask any more questions. Instead, he went back outside the track and watched the game seriously.

The order sounded, and Miss Y flew out from the starting point gracefully like the previous two rounds, while Wang Boyu staggered behind her, and the distance between the two became farther and farther.

After crossing the curve, Ms. Y turned her head twice to check on Wang Boyu's situation. The expression on her face was not as relaxed as before. She didn't concentrate on sliding to the end.

Wang Boyu was left behind with a look of frustration, and finally reached the finish line. The system notification sounded in time: [Wang Boyu failed the challenge in the second round. 】

Miss Y didn't laugh at him this time, but slid to Tu Hua's side, with her hands folded around her chest, her expression elusive: "He failed, it's up to you."

Tu Hua smiled, and slid to the starting point with Ms. Y: "I will win."

The tone is confident and determined, and the movements are relaxed and natural. He is obviously not afraid of this game. Miss Y snorted coldly, her skirt swayed slightly with the movement, she stood on the left side of Tuhua again, and the atmosphere was tense.

Soon, the game begins. Ms. Y jumped out of the track nimbly, her silver hair drawing a streamlined arc in the air, like a snow elf, she quickly crossed the U-shaped track and slid towards the finish line.

But Tu Hua didn't work as hard as he did in the first round. He calmly followed Miss Y, and after a certain distance from her, he arrived at the corner of the U-shaped track as scheduled.

His gliding speed gradually decreased, and finally stopped at the inflection point of this inverted U-shaped track.At this moment, Ms. Y turned her head and saw Tu Hua who had stopped, the expression on her face froze instantly. Seeing Tu Hua's calm look, she finally gritted her teeth and broke through the finish line.

【Ding--】

[The second round of Tuhua, the challenge was successful. 】

【Ding--】

[Challengers Tu Hua and Wang Boyu cleared the main task: Miss y's Ice Dance, and unlocked the first stage condition: y=x^2-3x+2]

Wang Boyu looked at Tu Hua who stopped inexplicably on the track, and thought that this guy gave up the race by giving up on himself, but he did not expect to win so strangely!He staggered forward, looked at the earthy-faced Miss Y for a while, and looked at the relaxed expression for a while, and asked in surprise: "How did you win? And...you even cleared the level with me?"

Tu Hua slid to the outside of the track, gesticulating with the inverted U-shaped track with his hands, and said to Wang Boyu, "What do you think this track looks like?"

Wang Boyu was confused: "Arch? Like a bridge?"

"You are better at mathematics than me, think about mathematics." Tu Hua reminded him.

Wang Boyu rubbed his chin and thought for a while, then his eyes brightened: "Quadratic function! The image of quadratic function!"

"Yes, the reason why this track is set up in such a weird shape is precisely to echo the topic of the primary round, the quadratic function." Tu Hua explained, "And the beauty in front of us is named 'Miss Y' , associating with the image of the quadratic function, it is easy to draw a conclusion: the level mentioned in the rules is higher than Ms. y, not reaching the end before her, but getting a y value greater than her. "

"On such a quadratic function image with an opening downward, only the y value of the function at the apex of the image is the largest, so I don't need to compete with her for speed, I just need to stand at the curve and wait for her to break through the finish line."

Miss Y looked at him angrily, obviously a little unwilling: "Your thinking is right, but this is a risky approach after all. Without any reminder, how can you be sure that you will win if you do this?"

"Who said there was no reminder, didn't you give me a reminder?" Tu Hua looked at Miss Y with a smile on his face, with a sly look on his face.

Miss Y was stunned: "What?"

"Remember what I said to you before Wang Boyu's second round? I said I knew the method of the game, and I asked you if Wang Boyu won and we both could pass. But you said you wouldn't tell me .”

Tu Hua slowly slid to Ms. Y's side: "I wasn't sure at the time whether my method was correct, and the method to win this competition may also be some kind of technical competition. If we want to compete in technology, the two of us must It is necessary to win at the technical level, and there is only one way to reach the apex of the function. As long as one person wins, the other person can follow suit and win without fighting."

"That's why I asked you questions to test your attitude. And your evasive attitude just proved my guess was correct, so I can be sure that there must be another way to win the game."

"Okay." Miss Y lowered her eyes and spread her hands resignedly, "You guys pass."

As soon as she finished speaking, the door of the storage room behind her popped open with a "click".The two were about to leave when Miss Y suddenly took something out from behind her with great reluctance: "Wait, your reward."

In her hand was a crystal-clear ice rose that radiated radiant light like a crystal. Ms. Y handed the rose to Tu Hua, with a stern face and a unwilling expression: "This is the rose I gave to Mr. X, and now I give it to you. You have to help me give it to Mr. X, remember, Only the real Mr. X will accept this flower."

Tu Hua took the flower, his tentacles were cold, but they wouldn't melt.Putting the flowers into the system backpack, he suddenly became curious about the world setting of this game.

"Who are you, Mr. X?" Tu Hua asked.

When Mr. X was mentioned, Miss Y's face suddenly turned crimson: "Mr. X... is my sweetheart."

"Sweetheart? Are x and y a couple?" Wang Boyu gossiped, "Is there any message in it?"

"Stupid!" Tu Hua patted him on the head, and looked at Ms. Y with a smile, "What my sweetheart means is that you are unrequitedly in love with him."

Miss Y's face suddenly changed from embarrassment to anger: "You are really disgusting!"

Tu Hua continued to be mean: "That's right. In the coordinate system, you and x have only one point of intersection, and the two of you are getting farther and farther away. I guess it will be difficult for you to see him."

Ms. Y was completely annoyed and furious: "You guys get lost—"

After the roar, the equipment room returned to its original state. Miss Y and her ice and snow world have disappeared.The system interface pops up in time:

[Current level: primary level]

[Main quest: None]

[Sub-quests: None]

[Props: Mr. X's favorability +5, 1 ice rose]

[Conditions for primary selection: y=x^2-3x+2]

After Tu Hua and Wang Boyu cleared the main mission of Miss Y's Ice Dance, this mission level disappeared completely. The door of this equipment room was wide open, and there was nothing inside.

Although this level is weird, but fortunately it is part of the main task, which brings a little clue to the unsolvable formula in the primary level. Now it has at least become a quadratic function, although it is a quadratic function lacking a domain function.

According to Tu Hua's analysis, the next mainline level they encounter will either be given an x ​​definition domain or a y value, that is to say, it is very likely that they will encounter another mainline task, and they will be able to pass this primary level.

45 hours left.It seems that the progress is very fast, but in fact it is all wrong, because this school does not know how many mission levels are left, and all missions will be refreshed after they are cleared. The purpose of the system is to prevent these challengers from cooperating with each other and cheating. sex.So if you want to find the only main task among so many unknown tasks, the difficulty factor is very high.

Tu Hua felt that they should communicate with other challengers to understand the progress of everyone's tasks, so as to know themselves and the enemy.

But this guy Wang Boyu obviously hasn't recovered from the main task of lying down just now, he asked strangely: "How do you know that Miss Y and X are not a couple?"

Tu Hua smiled, took out the ice rose from the system backpack, and held it up in the sun to observe its crystal petals: "Who would send a rose to someone else? Roses that show love must be delivered in person, so I Guess...the two of them must be out of action."

The author has something to say: in the next mission, give the ice rose to Mr. X's Tuhua: the rose that shows love must be delivered in person [firm face]

Let's worship pure lemon tea and Ye Lingxue who guessed correctly in the previous chapter [applause]! !

You guys are so smart, I'm under a lot of pressure.