Super Scholar: Start with a low regulatory score!

Chapter 246 The best solution, there is no fastest, only faster!
This is Qin Yumo's answer, and because she was the first to make it, her answer is the first perspective.

In fact...

Su Yu, Zhang Hao, and Li Qianqian's answers were not exactly the same as Qin Yumo's, and they were not much different.

As for Huang Sihai, needless to say, with his scumbag strength, naturally he couldn't solve this question.

As the five people walked off the podium, they returned to their positions.

Jiang Nan's eyes swept around, "Okay, now everyone has finished, and everyone on the podium has also finished, let's take a look at the first question first, do you all think it is correct?"

"..."

"correct!"

The people below spoke in unison.

Even including the teacher Hu Yifei.

Although Hu Yifei has fallen behind in mathematics in the past few years, her eyes are on this after all, and she knows that there is no problem when she looks at the answer.

As for others such as Huang Sihai and Hu Dajun, they may not understand clearly, but the answer Jiang Nan pointed out was made by the class leader Qin Yumo, and Su Yu, Zhang Hao and Li Qianqian, the three top students, had basically the same answers, so it must be Correct!

"Ok!"

"You are right!"

"The answer is indeed correct."

Jiang Nan nodded, but immediately shook his head and said, "However, as I said before, no matter if you don't do homework after class, or you just want to rest after class, you need to find the optimal solution, that is, process optimization! "

"Then let me ask again, do you think the problem-solving process on the blackboard has been optimized?"

"Or rather..."

"Do you have any better ideas for solving the problem?"

"..."

"There is no other way to solve the problem!"

"It should be optimized!"

"After all, this was done by class leader Qin Yumo, and so did Su Yu, Zhang Hao, and Li Qianqian. It must be very good!"

"I think this problem-solving idea is very clear!"

"I didn't make it before, but now I suddenly realized that if I encounter it next time, I will do it too!"

"That's right, I've also learned to be useless!"

"Squad monitor Bullfrog!"

"Math class represents bullfrogs!"

"Physics class represents bullfrogs!"

"The study committee members are also bullfrogs!"

"..."

Everyone praised Qin Yumo and the others one after another.

of course!

They do deserve praise, too.

after all……

The love curve question on the blackboard is very simple for Jiang Nan, but there are not many he can do on the spot.

It can be seen from this.

These academic masters like Qin Yumo are still very powerful.

However, Jiang Nan curled his lips at this, and looked helplessly at Qin Yumo and Su Yu, "Think about it carefully, are you sure there is no other better way to solve the problem?"

"..."

"no!"

"It's really gone!"

"Even if I want to break my head, this is the only thing I have!"

Su Yu, Zhang Hao, and Li Qianqian shook their heads at the same time.

Even Qin Yumo is like this.

But next second.

Qin Yumo looked at Jiangnan hesitantly again, "Teacher Jiangnan, you...do you have a better idea?"

"..."

"Please remove the word [me]!"

Jiang Nan curled his lips: "Of course, I don't want to hit you, your foundation is still good."

"At least most of them have made this question."

"but……"

"Your thinking is limited and not open enough. Although the problem-solving ideas are correct, they are too regular."

"According to your solution, if you encounter it in the exam, it will take at least ten minutes. How much time will it be delayed? Do you still have to do the following questions?"

"When we take the exam, we must not only do it right, but also do it quickly, so we must find the optimal solution."

"And the question above."

"I can find three or five solutions just by thinking about it."

"And each of these cuts time considerably."

"..."

Done!

Jiang Nan wiped Su Yu's answer on the blackboard, and then wrote it quickly.

solution one...

Starting from the conclusions of "no more than" and "less than", use basic inequalities to scale, and then use graphics to estimate the area.

因为x^2+y^2=1+|x|y≤1+|x|y≤(x^2+y^2)/2。

So x^2+y^2≤2.

1：x可能取得的整数值为土1，0，代入曲线C的方程得整点坐标为（1，1）（1，0）（－1，1）（－1，0）……故序号1正确。

2: Suppose the distance from any point on the curve C to the origin is d, then d=x^2+y^2≤2.

So d≤√2.

So sequence number 2 is correct.

3：图形在第一象限的面积S大于1，图形在第四象限的面积S大于1/2，由对称性得，“心形”区城面积S大于(1+1/2)x2=3。

So sequence number 3 is wrong.

To sum up, we can choose C.

……

30 seconds.

Not even 30 seconds.

Jiangnan then wrote a new solution.

And this new solution is much simpler than the solution of Qin Yumo and others just now.

There is neither a coordinate equation nor a coordinate system, but only needs to grasp "not exceeding" and "less than".

If it was done by the people present, if Qin Yumo's solution took more than ten minutes, then Jiangnan's solution could be done in 5 minutes (including review and thinking time).

Gee!

Comparing these two, the difference is high.

"This……"

"How is it possible, how is this possible?"

"Why is Nanshen's solution so simple and fast?"

"Not to mention high school students, even junior high school students can understand Teacher Jiangnan's solution in seconds!"

"It can be said……"

"This is not the solution in high school at all!"

"And the knowledge of junior high school is used."

"But why..."

"I just couldn't think of it?"

"..."

Everyone in the class was dumbfounded, including the class teacher Hu Yifei.

This is really incredible.

Speaking of...

Jiangnan's solution is not only simple, but also easy to understand. Even war scum like Huang Sihai and Hu Dajun can understand it and learn it instantly.

but……

That's not the only thing that surprised them.

I saw that Jiangnan erased Zhang Hao's solution again, and wrote it quickly again.

"and many more!"

"Teacher Jiangnan, you are..."

The students present wanted to ask subconsciously, but they stopped abruptly because Jiangnan had already finished writing.

The second solution.

That is Jiangnan's second solution.

And this solution is faster, simpler, clearer, and more popular than the first solution just now.

how to say?

It is to use the mathematics knowledge learned in the fifth and sixth grades of elementary school to easily solve the topic of the third year of high school.

Gee!

There is only one word to describe it.

That is, absolutely.

"Fighting into a horse, it's so terrifying!"

"The bullfrog is so hot!"

"Nan Shen deserves to be Nan Shen, he is simply awesome!"

"..."

Everyone in the class, including Hu Yifei, the head teacher, all stared wide-eyed in astonishment.

However, I don't read much, and I can say it all over the world.

They really couldn't find any other words to describe their mood at the moment, they could only pinch their thighs over and over again.

And right now.

Jiang Nan erased Li Qianqian's solution again, and wrote it quickly again, and said at the same time: "Although the two solutions just now took much less time than yours, they are still in the college entrance examination. Not fast enough."

"Because this is a multiple-choice question, we don't need to make it so complicated."

"As long as you use the reverse method, you can easily get it done."

"..."

The voice fell.

Jiangnan's problem-solving process came out.

Hu Yifei: "%￥#@#￥%..."

Qin Yumo: "%￥#@#￥%..."

Su Yu Zhang Hao Li Qianqian: "%￥#@#￥%..."

All of them opened their mouths wide in astonishment.

however……

"Of course, if you still feel that it takes too much time, I have a faster method, which is the special value substitution method!"

Jiangnan continued to write while speaking.

"%￥#@#￥%..."

Everyone's scalp went numb for a while, and they were completely confused.

Hold the grass!

Hold the grass!

Hold the grass!

I can't say anything else, I can only grab this legendary plant and stuff it into my stomach!
……

sp: The content of this chapter is purely fictitious, any similarity is purely coincidental, please do not substitute reality, thank you for your support!
(End of this chapter)