God-level Xueba system upgrades 999 seconds

This is a calculus in advanced mathematics.

The title is: X-2xy+y=6 determine that y is a function of x, find Y".

Emmmm, you may not believe it, but at your level, it is better to learn mathematics from junior high school.

But every time these words came to his lips, Qin Luo swallowed them back abruptly.

Just give him a chance.

After thinking for a while, Qin Luo took out a pen and paper from his pocket.

As a world-renowned academic master, I bring a pen and paper not only for signing, but also for solving problems anytime, anywhere.

2x-2y-2xy’+3yy’=0
Y'=2x-3y/2x-3y
y”=（2-3y’）(2x-3y)-（2x-2y）（2-6yy’）/（2x-3y）

……

In less than a minute, Qin Luo had finished solving the problem.

"Understand?" Qin Luo turned to look at Li Shaolin.

"Ahem, I understand!" Li Shaolin nodded seriously.

Qin Luo smiled and said, "Then tell me, who and what am I writing about?"

What is written?
The corner of Li Shaolin's mouth twitched wildly.

After a long silence, Li Shaolin said seriously: "Numbers!"

God what numbers!
No, I also know it is a number!

No, that's not what I'm talking about!
"Forget it, I don't think advanced mathematics is suitable for you. You should learn from the contents of junior high school."

While talking, Qin Luo clicked on Baidu and searched for a "seventh grade" math textbook.

It's not that Qin Luo looked down on Li Shaolin, but because of Li Shaolin's strength, Qin Luo decided to teach students according to their aptitude.

Alas, there are not many excellent teachers like me...

"Thank you, Teacher Qin!"

Holding the mobile phone, Li Shaolin was overjoyed.

Soon he ran into problems again.

"Teacher Qin..."

Looking at this geometric equation, Qin Luo smiled wryly.

You may not be able to say it.I think you need to start from elementary school...

……

While Qin Luo was solving the problem, in the corner not far from Qin Luo, several burning eyes stared at Qin Luo, or Li Shaolin beside him.

At this moment, Qin Guoyang set off a monstrous wave in his heart.

To be honest, when Chen Qiangsheng said that Li Shaolin's prodigal son had turned back, Qin Guoyang had some doubts in his heart.

After all, it is difficult for a person who is used to playing to be interested in learning.

But now, when he saw Li Shaolin holding a textbook and studying mathematics with his own eyes, Qin Guoyang was shocked on the spot.

It turns out that the sun can really come out from the west!
At this moment, he really wanted to know the reason.

Thinking of this, he waved to Qin Guotao.

"Guotao, come here." Qin Guoyang said.

"Dad?" Three steps in parallel, Qin Guotao came to his father.

"What's going on here?" Qin Guoyang asked.

what happened?
Hearing Qin Guoyang's words, the corners of Qin Guotao's mouth twitched.

What's going on, he really can't say.

Could it be that the spark of learning is coming out of the name?

Or is it that mathematics can exercise logical relationships and make people become martial arts masters?
No matter which one, it sounds like a storyteller.

After hesitating for a while, Qin Guotao gritted his teeth and said, "Dad, do you believe me when I say that Li Shaolin's brain is broken?"

letter!
Believe in a hammer!

Hearing his son's words, Qin Guoyang frowned, and said sharply, "Speak human words!" '

"Uh, Qin Luo said that mathematics can exercise logical thinking and make people more skilled, but Li Shaolin believed it..." Qin Guotao said.