After taking the advice, I became a top student.

"Brother Hao, I thought this problem was very easy, why didn't you finish it?"

Among high school students, some have incredibly high emotional intelligence, while others have practically zero emotional intelligence.

Zhou Hao looked at his deskmate and almost rolled his eyes, but what could he do? This guy was his best friend whom he had grown up with, wearing split-leg pants together.

"You think it's easy because Chen Mo's solution method is easy, not because the problem itself is easy."

Zhou Hao said irritably, "If we use the conventional method, you could figure out in less than half an hour that I should take your surname."

"So what's the standard solution?"

"My friend asked curiously."

"The teacher will talk later, so listen to it yourself."

Zhou Hao was no longer in the mood to explain the problem.

He just stared blankly at Chen Mo, who was diligently memorizing words, his expression complex.

Chen Mo had answered many questions and explained many topics before, but he knew all of them, so naturally he didn't think Chen Mo was anything special.

But today was different. Chen Mo's composure in the face of difficulties made him suddenly feel that Chen Mo was already quite distant from him, so distant that even his jealousy had faded a little.

When Hu Xin entered the classroom, he noticed that the atmosphere was a bit strange, but he assumed it was because the holiday was approaching and everyone was more alert. He believed that after he finished explaining the midterm exam questions, everyone would calm down.

It was said that he was going over the midterm exam questions, but Class 18 was not a regular class after all. Usually, Hu Xin would only go over the last two or three multiple-choice questions, the last few fill-in-the-blank questions, and the last three essay questions for a set of questions.

Or we can pick a few representative questions to discuss. If anyone has any questions, they can ask in the office or ask their classmates.

Therefore, two class periods are more than enough time for Hu Xin to finish explaining this test paper.

When discussing the last question,

"Look at the problem, everyone. Math is actually very simple. We just need to convert the conditions of the problem into equations."

Hu Xin said confidently, "For example, in this problem, MN is perpendicular to AB, so we can get two equations."

"First of all, perpendicularity is easy to understand; it's simply k1k2 = -1."

"Since it bisects the line, the intersection of MN and AB is the midpoint of AB. Let's assume the intersection point is T(x0, y0), then we have xA + xB = 2x0, yA + yB = 2y0."

"We've finished translating 'perpendicular bisector.' What other condition is there? |PA|*|PB|=|PM|*|PN|. What comes to mind when you see this condition?"

"It must be the power theorem, everyone learned that in junior high school, right?"

"This means that points AB and MMN are concyclic, and MN is the perpendicular bisector of AB. If we draw a circle next to it, and then draw a chord AB, what is the perpendicular bisector of AB?"

"It's definitely the diameter!"

【picture】

"Therefore, the condition that four points are concyclic is translated into MN being the diameter of the circle."

When you encounter a circle, do you prefer the radius to the diameter?

"So we mark the center G, then is GN the radius? And what else is also a radius?"

"It's definitely GA!"

"If we connect GA, do you all notice what TAG looks like? It's a right triangle!"

"What comes to mind when you see a right triangle? It's definitely the Pythagorean theorem!"

Therefore, TA^2 + TG^2 = GA^2!

"Who is TA? Who is TA? TA is half of AB!"

"Therefore, we transform TA into one half, and G is the midpoint of MN, and T is the midpoint of AB. So we can combine the equations of the two lines with the parabola to find the coordinates of the two midpoints, and then we can get TG."

"What is the final GA? It's the radius, which is 1/2MN. And what is MN? It's the chord length of the parabola. Similarly, by combining the two straight lines and the parabola, you can get the chord length."

"By combining the above equations, we can finally calculate the slopes of the two lines, k1 and k2."

"We can easily see the coordinates of F, and we know the slope, so we can use the point-slope form to write the equation for l!"

"The solution to this problem is quite simple, it just involves a bit more calculation. Just be careful when you're working on it, and getting those ten-odd points is pretty easy..."

Hu Xin was getting into the swing of things on the stage, and he thought he must look incredibly handsome while lecturing.

However, after he finished speaking, he looked back at the classroom and suddenly noticed that the students' attention was somewhat scattered, and they kept glancing at Chen Mo's seat.

"What do you mean?"

"Did I say something wrong?"

Soon, the test paper was finished, and the bell rang to signal the end of get out of class.

"Zhou Hao, Chen Mo, both of you come to my office."

After finishing speaking, Hu Xin picked up the textbooks and walked towards the office.

"Zhou Hao, when I was explaining the last question today, I noticed that everyone's attention wasn't very focused. What's going on?"

The class representative can be understood as the teacher's eyes and ears in the class, and this is exactly what he needs to do. As a top-level teacher, he naturally needs to keep track of the students' status at all times.

Zhou Hao glanced at Chen Mo standing beside him, then at Hu Xin, and hesitated before speaking.

"?"

"Is it also related to Chen Mo?"

"What exactly happened?"

Hu Xin was a little puzzled. When he was explaining the last question, the students kept looking at Chen Mo, which he naturally noticed.

After hesitating for a moment, Zhou Hao finally told the truth, "I also followed the teacher's method, but just by listening to the method, you can tell that the amount of calculation involved is enormous, which is why I couldn't figure it out in the exam."

"Chen Mo just explained a simpler method, and you might think that Chen Mo's method is simpler than the method the teacher taught."

Hu Xin was so angry he laughed.

Having seen Chen Mo's exam paper, he naturally knew what Zhou Hao meant by the simple method.

"Don't you even consider this: would you think of this method during an exam? Would you be able to use it skillfully? Would you be able to handle it?"

Hu Xin countered, "Of course you have a chance, but what about the other students?"

"What I'm teaching you is the upright and honorable way of the king. As long as you have normal logical thinking ability, you'll know what to do next time you encounter this situation."

"Use Chen Mo's method? Then what's the point of learning about coordinate systems? He directly uses geometric proofs to solve solid geometry problems. Can all of you do that?"

"Using Chen Mo's method, if we slightly change the question format, can you still tell the difference?"

Hu Xin was genuinely angry, and a series of questions left Zhou Hao speechless.

However, Hu Xin quickly calmed down. He knew it wasn't Zhou Hao's fault, so he said, "I'm sorry, teacher got emotional. It's not your fault. I understand. You can go back now."

He decided to find an opportunity later to use a vivid example to help his classmates understand this principle.

Only then did he look at Chen Mo, a smile appearing on his face. "Chen Mo, you've seen your midterm exam results. I think you have two paths to choose from now on."

"First, take advantage of the fact that you're still in your first year of high school to study the three science subjects well and improve your English. With your math score, as long as the other subjects aren't too bad, you should be able to get into a decent university."

"The second option is to participate in math competitions."

"You got a perfect score on this midterm exam, which means you have a talent for math. You can give it a try."

"Of course, there are risks involved."

"Putting all your time and energy into competitions might make your already weaker grades in other subjects even worse, and there's no guarantee you'll win an award..."

Although Zhou Zhi had given him a firm order to have Chen Mo join the math competition team, Hu Xin still decided to explain the pros and cons to Chen Mo and let him decide for himself. Otherwise, it would be irresponsible to blindly let students participate in competitions.

"I'm willing to participate in the competition!"

Chen Mo agreed without hesitation. It would be perfect for fulfilling the suggestions of netizens. Moreover, with his photographic memory, he believed that he would be able to learn other subjects more efficiently. Participating in the competition would not interfere with his studies for the college entrance examination.

Children make choices; adults want it all!

"Go back and think it over again, then come back and tell me when you've made up your mind."

Hu Xin did not agree immediately, but waved his hand, telling Chen Mo to go back first.