Super Scholar: Start with a low regulatory score!

Chapter 88 Don't use paper and pen, just do the math in seconds?

"hiss……"

In an instant, the people present gasped.

Especially Zhou Lingfeng, the leader of the mathematics group, was so startled that he covered his chest with his hands and was almost sent down.

Nima!

The real competition questions he worked out.

But Jiangnan said it was simple, saying that he would know the answer at a glance, so there was no need to do it?

Gee!

This tone is not without madness.

Let's not talk about the real level of Jiangnan.

Just talk about the ability to talk big.

In his decades of teaching career, Jiangnan is definitely the strongest one he has encountered.

Originally, he still attached great importance to Jiangnan.

after all……

In this monthly exam, Jiangnan got a perfect score in mathematics and defeated Qin Feng, a super academic who has always been the top student in the school.

and……

There is also the strong recommendation of the deputy team leader Cao Tianyuan.

but……

Hear Jiang Nan's words.

He immediately felt a little displeased with Jiangnan.

"Okay, okay, you said these questions are simple and you can do it at a glance, so what do you say is the answer to this question?"

Zhou Lingfeng pointed to the first multiple-choice question and asked.

The minimum value of the distance from the whole point on the plane (the point whose vertical and horizontal coordinates are both integers) to the straight line y=5/3x+4/5 is...

A: √34/170.

B: √34/85.

C: 1/20.

D: 1/30.

This is the minimum point-to-line distance.

It doesn't look too difficult at first glance.

but……

That's just at first glance.

If you really want to find the answer.

It is absolutely impossible not to waste half a sheet of draft paper.

however……

Jiang Nan neither took the paper nor started the pen, just glanced at it, and said directly: "Answer B."

"hiss……"

Zhou Lingfeng gasped again.

just because...

correct.

Jiang Nan chose the right answer?

"You... have you done this question before?"

Zhou Lingfeng's eyes widened in disbelief.

"No."

Jiang Nan shook his head directly.

"Then why are you so fast?"

"Didn't I just say that? This question is very simple. You can know the answer at a glance. There is no need to do it."

"you……"

Zhou Lingfeng almost spat out a mouthful of blood, "You can't be a blind coincidence, can you! Tell me about the process?"

"..."

“设整点坐标(m，n），则它到直銭25x-15y+12=0的距离为d=|25m-15n+12|/√(25^2+(-15)^2)=|5(5m-3n)+12|/5√34。”

“由于m，nEZ，故5(5m-3n)是5的倍数，只有当m=n=-1时，5(5m-3n)=-10与12的和绝对值最小，其值为2。”

"Therefore the minimum value sought is √34/85."

"The answer is B."

"..."

"This……"

Zhou Lingfeng was stunned again.

The question was made by him.

Naturally, I have read the answers in advance, including the problem-solving process.

and so……

He can be sure.

Jiangnan's process is correct.

Not to mention 100% correct, but also streamlined a lot?

Fighting gas into a horse, so terrifying.

Not only him, but the physics, chemistry and biology team leaders beside him were also stunned.

Only Cao Tianyuan, Xie Hongwei and Hu Yifei were calm, after all, they knew a little about Jiangnan.

Especially the physics teacher Xie Hongwei, although he said that he was trying to find out the mathematics of Jiangnan, but he was amused for a while.

just because...

He was all too familiar with this scene.

He had also given Jiang Nan a question in class before.

And it's even harder.

The kind that ordinary students can't do at all.

But Jiang Nan didn't even need calculations. As soon as he came up with a question, Jiang Nan stood on his seat and answered in seconds.

The old scene reappears.

But the person who was slapped in the face changed.

as a bystander.

Xie Hongwei almost couldn't hold back his laughter.

As for Cao Tianyuan, the serious expression on his face had long since disappeared, but a flash of complacency could not help.

He secretly glanced at Zhou Lingfeng, "Hehe, you think I don't know about your little trick?"

"It's just that I don't care."

"after all……"

"In the face of absolute strength, no matter how many small tricks you have, they are paper tigers, which will be broken in one blow."

"..."

"impossible!"

"It's absolutely impossible."

"These are all Mathematical Olympiad questions. How could you just figure out the answer without even thinking about it?"

Zhou Lingfeng still couldn't believe it, and pointed to the second question to Jiangnan: "Which one would you choose for this question?"

"C, 3√3."

"What about the third way?
"C, 3^999."

"What about the fourth way?"

"A, the price of two roses is high."

"The last final question?"

"D, lg|sinx|."

"..."

Zhou Lingfeng: "..."

Teacher present: "..."

Everyone was dumbfounded.

No need for paper and pen, it is completely verbal calculation.

That's not the point...

The point is that from Zhou Lingfeng's reaction, you can tell that Jiangnan answered all these questions correctly?
Zhou Lingfeng felt like he was going crazy.

Is it a dream?

but……

He pinches himself.

Nima!

It hurts so much!
This is not a dream at all!
Can……

Not dreaming.

Is there really such a genius in the world?

Or……

Jiangnan is cheating?
Zhou Lingfeng turned his head to look at Cao Tianyuan: "Old Cao, tell me honestly, didn't you show Jiangnan the paper in advance and give him the answer, so he knows?"

"Old Zhou, are you stupid?"

Cao Tianyuan scolded angrily, "You published this paper on a temporary basis. It's like a baby bump. It's just a copy. I haven't shown it to me. How can I show it to Jiangnan?"

"Also... that's right!"

Zhou Lingfeng nodded.

indeed……

He is the only one who knows this paper.

How could Cao Tianyuan have it?

"Then...you have been giving him special training all the time? You gave him all the competition questions for nearly 20 years?"

Cao Tianyuan: "..."

Speechless.

If only he had been trained by Jiang Nan.

But the problem is...

Jiang Nan didn't even listen to him in class, so how could there be special training?
"Jiangnan, please explain to our team leader Zhou the process of explaining the problem in detail! lest he doubt this or that."

Cao Tianyuan kicked the ball directly to Jiangnan.

Jiang Nan nodded and pointed to the second question: "As can be seen from the figure, if BD=t, then OD=√3t-1, so B(√3t-1, t) satisfies the equation x^2-y^2=1 , can get =√3, so the equilateral triangle, the area of ​​△ABC is 3√3.”

A question just ended.

Jiang Nan pointed to the next question.

“这题要求的是展开式用每间降两项系数的和，可联想到1的单位根，用特殊值法……a0+a3+a1998=3^999，故选C。”

"..."

"This last question is even simpler."

"Directly use the method of elimination."

"y=sin|x| is not a periodic function, you can know it by just making a graph, and option A can be ruled out."

"The minimum positive period of y=cos|x| is 2π, and it is a decreasing function on (0,, π/2), excluding B."

"y=|ctgx| is a subtractive function on (0, π/2), excluding C, and finally only D, lg|sinx|."

"..."

"Seven three two nine!"

"Zero eight eight!"

"Seven two!"

(End of this chapter)