This top-tier academic genius

Qin Zhengyan looked at Lin Yan, who had stopped writing, with a hint of surprise.

He didn't expect that the other party would not only actually dare to come up and solve the problem, but also do so so quickly.

More importantly, it uses a completely different method than the one I just described, which is more concise and efficient, and the solution process is flawless and perfect.

He asked, "How did you come up with this problem-solving method?"

"Think? No need to think. It's an arithmetic sequence with three consecutive terms, and the middle term is the mean. You don't actually need to break it down step by step; just look at the difference in the denominators and write down the coefficients. You can even get the answer mentally."

Lin Yan's tone was so indifferent, as if he were talking about something trivial, even taking it for granted.

Qin Zhengyan: ......

The air fell silent for two seconds.

The students below the podium erupted in excitement, craning their necks and staring intently at Qin Zhengyan, eager for the teacher to give them a definitive answer as to whether Lin Yan's solution was correct.

You know, Lin Yan only scored 29 points on the math test, ranking last in the class. Qin Zhengyan just criticized him in front of the whole class. How come he can solve a problem that the teacher has to explain for a long time in a simpler way in the blink of an eye?

Qin Zhengyan coughed lightly. "Yes, this method of solving problems is correct. What Lin Yan said earlier wasn't wrong either. His solution process is essentially no different from what I just described. Although setting up a system of equations requires a few more calculations, it's very reliable. Once you've done more problems like this, you can also solve problems quickly like him."

As soon as he finished speaking, all the students' eyes were instantly focused on Lin Yan, their expressions varying.

"Am I seeing things? He really got it right?"

"The teacher just said he got 29 points, that doesn't seem like his level!"

Especially those few academic underachievers who, like Lin Yan, consistently ranked at the bottom of the class, stared wide-eyed, their faces beaming with "Holy crap, that's right, 666, that was a good performance."

At the same time, Qin Zhengyan looked at Lin Yan with a hint of suspicion.

Something's not right! This kid clearly knows how to solve it, but on the last test, all the problem-solving questions were blank, not even a single step was written. Could it be... that he secretly searched for the answers on his phone and memorized them to pretend to be an expert?

To verify his hypothesis, he planned to give him another similar question to try.

"Please stand over there and wait a moment."

Qin Zhengyan picked up the chalk and wrote another question next to it.

「已知等差数列{an}满足：a1+a3=10，a4−a2=4；求数列{an}的通项公式。」

It's actually the same type of question as the previous one, and the difficulty is about the same.

To put it bluntly, it's just the same old thing in a different guise, specifically designed to test Lin Yan.

Lin Yan glanced at the question, didn't think for long, picked up the chalk and started writing without hesitation.

an=2n+1

The answer was given directly.

One student asked, "Why isn't there a solution process?"

Lin Yan: "This question is the same as the one before. As I said, you can get the answer mentally using the same method."

Qin Zhengyan, who was standing nearby, said, "Why don't you go over the solution process?"

Lin Yan then picked up the chalk and continued writing.

Solution: Let the common difference be d.

a1+a3=2a2=10⟹a2=5

a4−a2=2d=4⟹d=2

a1=a2−d=5−2=3

an=a1+(n−1)d=3+2(n−1)=2n+1

The entire process still took about half a minute.

The entire problem-solving process was completed in one go, neat and concise, exactly the same as before!

Qin Zhengyan leaned closer to take a look, and his lips twitched.

Alright, that's confirmed. This kid really knows it; he's not faking it!

You, Lin Yan! Since you know how to do it, why do you always leave the problem-solving questions blank on tests, deliberately getting the lowest score? Are you deliberately trying to mess with me?!

Qin Zhengyan suppressed his helplessness, picked up the chalk, and heavily marked a checkmark next to the solution process. His tone softened slightly: "Alright, go back now and pay attention in class. Students, watch closely; this is the result of thoroughly understanding the question type. Once you've practiced it enough, you'll be able to do it just as quickly!"

On the way back to their seats, the students all looked at Lin Yan with varying expressions.

Some were curious, some were surprised, and some admired.

Several girls blushed secretly, their eyes filled with admiration, whispering, "Lin Yan is so amazing," and "He looks so handsome when he's seriously solving problems."

For most people, Lin Yan, the transfer student, is still relatively unfamiliar. They only know that he used to be a "celebrity" who crashed and burned and returned to school in disgrace.

Besides being good-looking, her grades were terrible, always hovering in the bottom three.

After Lin Yan sat down, his deskmate quietly gave him a thumbs up.

"Amazing! Old Qin is so strict, yet you managed to escape unscathed and even got praised by him. You're a role model for us all!"

However, Lin Yan had no time to care about what others thought; he was currently very hungry, hungry for mathematical knowledge.

Various mathematical symbols and formulas are always floating in my mind, some familiar, some vague.

Functions, derivatives, sine, cosine, fractional inequalities, the geometric meaning of complex numbers... it's like a tangled ball of yarn.

He knew this was because the original owner had neglected his studies for two years, missing too many fundamental knowledge points, resulting in a complete break in his knowledge system and the absence of a coherent framework. To catch up with the senior year of high school, he had to start from the basics!

He decisively took out his first-year high school math textbook and started flipping through it from the first page.

Qin Zhengyan glanced at him but didn't say anything more, and continued talking about the exam paper.

The bell rang, and this time the teacher didn't extend the class; the bell rang and the get out of class ended.

A math class ended, and Lin Yan had already flipped through nearly half of the first-year high school math textbook.

The math textbook, which used to look like a headache, now seems unusually familiar.

It turns out that math can be this cute.

"Lin Yan, you were so awesome just now! How did you even know how to do those problems?"

Chen Bin walked over from the last row of seats. He was Lin Yan's closest friend in the class because they lived in the same neighborhood and he was also a poor student.

"I just happened to run into her a few days ago."

"Oh, I see. Holy crap, what are you doing? Still reading a math book? Stop pretending, what are you reading? What, are you preparing for graduate school? Come on, let's go to the bathroom."

"I'm not going, you go."

Lin Yan didn't even look up; his attention remained on the textbook, as if it held some kind of attraction.

"No way, you..."

Just as Chen Bin was about to speak again, he suddenly noticed that several girls in the class were frequently looking at Lin Yan, who was engrossed in reading, and he instantly understood.

Oh, so it's just him trying to portray himself as a top student, putting on an act.

With his handsome looks and serious study habits, he's bound to attract girls.

Chen Bin said no more and went to the toilet to relieve himself, thinking to himself, "Sigh, if I were as handsome as Lin Yan, I would hold a book and lean against the door frame every day to strike a pose, and all the girls in the class would be smitten."

Little did he know that Lin Yan was genuinely working hard to improve his basics and had no intention of pretending at all.

Soon, the school bell rang again; this was physics class.

Lin Yan put away her math textbook, still holding a sliver of hope: if she could pick up math so quickly, maybe she could do physics too. If she listened carefully in class, she could always catch up a little.

But the moment the physics teacher spoke, Lin Yan was instantly stunned.

"Today we'll talk about the momentum theorem: momentum p = mv, impulse I = Ft. The momentum theorem states that the impulse of the net external force equals the change in the momentum of the object, that is, I = Δp..."

I could understand every single word the teacher said, but when they were put together, they became like a dense, incomprehensible book, pouring into my brain. The more I listened, the more drowsy I became, and my eyelids started to droop.

His physics foundation is still at the junior high school level. How come junior high school physics is so easy, but it's different in high school?

Sure enough, without any cheats, I'm still a noob.

Helpless, Lin Yan had no choice but to take out his math textbook again and secretly start studying math.

In comparison, mathematics seems much more appealing.