Super academic master: start with low adjustment scores!

"Hiss..."

Instantly, everyone present took a breath of cold air.

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

Damn it!

He worked hard to come up with the real competition questions.

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

Tsk tsk!

This tone is really arrogant.

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

Just talk about the ability to brag.

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

Originally, he still valued Jiangnan very much.

After all...

This monthly exam, Jiangnan scored full marks in mathematics and defeated the super academic master Qin Feng who has always been the first in the school.

And...

There is also the strong recommendation of deputy head Cao Tianyuan.

But...

Hearing Jiangnan's words.

He immediately disliked Jiangnan.

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

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

The minimum distance from an integer point on a plane (a point with both vertical and horizontal coordinates being integers) to the line y=5/3x+4/5 is...

A: √34/170.

B: √34/85.

C: 1/20.

D: 1/30.

This is the minimum distance from a point to a line.

It doesn't seem difficult at first glance.

But...

That's just a first glance.

If you really want to get the answer.

It's absolutely impossible without wasting half a sheet of draft paper.

However...

Jiangnan didn't take the paper or write, he just glanced at it and said directly: "The answer is B."

"Hiss..."

Zhou Lingfeng took a breath again.

Just because...

That's right.

Did Jiangnan choose the right answer?

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

Zhou Lingfeng's eyes widened in disbelief.

"No."

Jiangnan shook his head directly.

"Then how did you figure it out so quickly?"

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

"You..."

Zhou Lingfeng almost vomited blood, "You didn't just guess by chance! Tell me about the process?"

"..."

"Let the coordinates of the whole point be (m, n), then its distance to the line 25x-15y+12=0 is d=25m-15n+12/√(25^2+(-15)^2)=5(5m-3n)+12/5√34."

"Since m, nEZ, 5(5m-3n) is a multiple of 5. Only when m=n=-1, the absolute value of the sum of 5(5m-3n)=-10 and 12 is the smallest, and its value is 2."

"So the minimum value is √34/85."

"The answer is B."

"..."

"This..."

Zhou Lingfeng was stunned again.

He had set the question.

Of course, he had seen the answer in advance, including the process of solving the problem.

So...

He could be sure.

Jiangnan's process was correct.

Not only was it 100% correct, but it was also much more concise?

Fighting spirit turned into a horse, so terrifying.

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

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

Especially Xie Hongwei, the physics teacher, although this was to test Jiangnan's mathematics, but he felt funny in his heart.

Just because...

He was familiar with this scene.

He had given Jiangnan questions in class before.

And they were all extremely difficult.

The kind that ordinary students could not do at all.

But Jiangnan didn't even need to calculate. As soon as he gave the question, Jiangnan stood on his seat and answered it in seconds.

The old scene reappeared.

But the person who was slapped in the face changed.

As a bystander.

Xie Hongwei almost couldn't help laughing.

As for Cao Tianyuan, the serious expression on his face had long disappeared, and a hint of pride flashed across his face.

He secretly glanced at Zhou Lingfeng, "Haha, do you think I don't know your little tricks in setting questions?"

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

"After all..."

"In the face of absolute strength, no matter how many little tricks you have, they are all paper tigers that will be broken with one blow."

"..."

"Impossible!"

"This is absolutely impossible."

"These are all Mathematical Olympiad questions. How can you calculate the answers without even thinking about them?"

Zhou Lingfeng still couldn't believe it, and pointed to the second question to Jiangnan: "Which option do you think should be chosen for this question?"

"C, 3√3."

"What about the third question?

"C, 3^999."

"What about the fourth question?"

"A, two roses are expensive."

"The last question?"

"D, lgsinx. "

"..."

Zhou Lingfeng: "..."

Teachers present: "..."

Everyone was dumbfounded.

No need for paper and pen, just mental arithmetic and answer in seconds.

This is not the point...

The point is that from Zhou Lingfeng's reaction, we can know that Jiangnan got all these questions right?

Zhou Lingfeng felt like he was going crazy.

Is it a dream?

But...

He pinched himself.

Damn!

It really hurts!

This is not a dream at all!

But...

It's not a dream.

Is there really such a genius in the world?

Or...

Is Jiangnan cheating?

Zhou Lingfeng turned his head and looked at Cao Tianyuan: "Old Cao, tell me honestly, you didn't show this paper to Jiangnan in advance, and gave him the answer, so he knew it?"

"Old Zhou, are you stupid? "

Cao Tianyuan cursed angrily, "You made this test paper at the last minute, and you treated it like a treasure. You didn't even show me this one copy. How can I show it to Jiangnan?"

"That's right!"

Zhou Lingfeng nodded.

Indeed...

He's the only one who knows about this test paper.

How could Cao Tianyuan have it?

"Then... have you been giving him special training? Have you given him all the competition questions from the past 20 years?"

Cao Tianyuan: "..."

I was speechless.

It would be great if he had given Jiangnan special training.

But the problem is...

Jiangnan doesn't even listen to his class, so how can he have special training?

"Jiangnan, just explain the problem-solving process in detail to our team leader Zhou! So that he won't doubt this or that. ”

Cao Tianyuan kicked the ball directly to Jiangnan.

Jiangnan nodded and pointed to the second question: "From the figure, we can see that if BD=t, then OD=√3t-1, so B(√3t-1, t) satisfies the equation x^2-y^2=1, and we can get =√3, so the area of ​​the equilateral triangle, △ABC is 3√3."

One question just ended.

Jiangnan pointed to the next question.

"This question requires the expansion to use the sum of the two coefficients of each interval, which can be associated with the unit root of 1. Use the special value method...a0+a3+a1998=3^999, so choose C."

"..."

"This last question is even simpler."

"Use the elimination method directly."

"y=sinx is not a periodic function. Just make a graph and you will know that option A can be eliminated. ”

“The minimum positive period of y=cosx is 2π, and it is a decreasing function on (0, π/2), so B is eliminated. ”

“y=ctgx is a decreasing function on (0, π/2), so C is eliminated, and finally only D, lgsinx, is left.”

“…”

“Seventy-three-twenty-nine!”

“Zero-eight-eight!”

“Seventy-two!”