I have a date with math

Mathematics is worthy of mathematics, the ideas of the lecture questions are clear, and the question types of the test points are accurately grasped. When the math teacher was still "scrubbing" on the blackboard to simplify, he clearly dissected a question for me.

This question is really difficult. After deriving the relationship based on the known, it needs to be combined and transformed. In addition to dividing a number, all the unknowns will be replaced by the ones required by the title. Finally, the ratio required by the title should be regarded as a whole, using binary Solve the equation once.

It was like walking into a maze. When I walked out and looked back, I couldn't help but want to look up to the sky and sigh: Damn.

I wanted to express it in a thousand words, but I am uneducated, so I can say it all over the world.

The math teacher also seemed to have entered this maze. After she introduced the relationship, she transformed the error. After spending a long time there, she finally found something wrong and wiped a blackboard.

While wiping, she asked us to think about it, saying that she saw something was wrong.I just finished talking here, of course I know what is wrong with her. She didn't convert a into sina... The title is known to be sina=1/2. She calculated the value of a and substituted it into the formula. In fact, all she needed was It's just sina, it has nothing to do with a...

I was about to ask him the next question, when I turned my head and saw that there was no one there—when I looked up again, I saw him go up with his long legs, pick up the chalk under the astonished expression of the math teacher and the sluggish eyes of the students The process is written out in a smooth and smooth manner, and every step is very clear.

"Teacher, it's like this."

The corner of the math teacher's mouth twitched violently: "I think so too..."

When he got off his seat, the students realized what was going on, and the class burst into applause. The math teacher waved his hands awkwardly and said, "This question is actually very simple, but the steps are a bit convoluted, and it is easy to make people take detours." ——Come on, students, next question, next question.”

I said, "Can you keep a low profile?"

Mathematics thought for a while: "Aren't I low-key if I empty a multiple-choice question?"

My current expression is exactly the same as that of the math teacher just now, the corner of my mouth twitched fiercely, and I was speechless for a while.

Xiao Xiao in the front row turned around and gave a thumbs up: "Awesome."

After class was over, the math teacher called him out. When he came back, I asked him what the math teacher told him to do.

"Uh...she said she checked my test paper and asked me why I had to blank a multiple-choice question. I said I couldn't do it—she said I lied to her...because I was empty of the first collective question."

"Pfft—" I almost swallowed my mouthful of old blood, "But you've been away for so long, is it because of this?"

"No... Then she said something about you, and asked me why I didn't participate in the math competition."

"what do you say?"

"I said that the topics of the math competition were too simple and not challenging, so I didn't want to go."

"...Okay, you can go away."

I am like a scumbag who communicates with Xueba, and I am abused in front of Xueba.

"Later she also showed me the high math problems of the university. I thought they were all pediatrics, but I didn't say anything."

"Okay, please shut up."

Mathematics patted me on the shoulder proudly, and said, "Hollow me well, and I will let you taste the feeling of being a mathematician in the future."

"Let's work towards 140 first." I shook the college entrance examination theory in my hand - "Five-Year College Entrance Examination and Three-Year Simulation", "I have no idea when I find a new question type with parameters, and the analysis is messy..."

"ojbk."