I have a system too invincible

Chapter 105 Error?

Time passed little by little.

Blank test papers are gradually being written.

Li Bin's Mathematics Olympiad test paper, filling in the blanks, choosing, and answering three categories of questions has been completed, and the test time is only half past.

"The time is well grasped! There is still enough time!" An old professor looked at his watch and nodded in satisfaction.

The three major categories of Mathematical Olympiad test papers, fill-in-the-blank, choice, and answer questions are just basic questions, and you can easily answer them as long as you are proficient in them.

The application test questions are different.

Although there are not many application questions, less than ten questions, each question is very difficult.

A number may require a whole piece of scratch paper to calculate, and a word problem may have several such numbers.

After Li Bin completed the first three types of questions, he still had half of the time to do application questions, which is already very good in terms of time, and it is considered ample.

Professor Gao found a table next to him and sat down. He had a practical problem in his hand. This problem was on Li Bin's test paper. Li Bin is also working on this problem now.

Professor Gao is a professor of high mathematics and Olympiad mathematics!His research on mathematics has reached a very deep level.

In Li Bin's Mathematical Olympiad test paper, Professor Gao only needs to glance at the first three categories of questions, and then he can know the answer after a moment of mental calculation.

But for application questions, even Professor Gao has to do some calculations on scratch paper to know the answer.

The test papers are standard test papers issued uniformly across the country, and have been kept in a sealed archive room before.

Even the principal and all the old professors only got the test papers before the exam.

Professor Gao sat behind the desk, and the draft paper in front of him was already filled with calculation formulas.

As his brows relaxed, Professor Gao smiled, he had already solved this application problem!
Walking slowly to Li Bin's side, Professor Gao looked down at Li Bin's test paper.

After a random glance, a look of surprise appeared on Professor Gao's face. Li Bin had already finished that application problem, and Li Bin had already written some formulas for the next application problem.

"So fast? Are you doing it faster than me?"

"Is the answer correct? Is the formula column standardized?"

Looking carefully, Professor Gao admired it, and said to himself, "The answer is right."

Then Professor Gao looked at the formulas that were full of rows.

Another difference between applied questions and other questions is that other questions only need to write down the answer, but applied questions also need to write down the solution method.

Otherwise, even if the answer is correct, but the answer formula is wrong, or if the answer formula is not standard, a large number of points will be deducted.

After reading the formulas carefully, Professor Gao nodded with satisfaction. The solution formula written by Li Bin was exactly the same as what he wrote, so it was naturally very standard!

Without wasting any more time, Professor Gao glanced at the next application problem, then sat down behind the desk next to him, and began to calculate carefully.

The difficulty of applied test questions increases in steps!

It took Li Bin less than 10 minutes to answer the first practical test question.

It took Li Bin more than ten minutes to answer the second application question.

……

Now Li Bin is working on the last application question, and the last question, the penultimate application question, took Li Bin 25 minutes to complete the solution from the beginning!
At this time, Professor Gao stepped over to Li Bin's side again, and looked down at Li Bin's test paper.

"Hmm! The answer is correct!" Professor Gao nodded in satisfaction, and then looked at the formula for solving the problem.

Professor Gao was very satisfied with Li Bin's performance in the previous practical test questions.

Li Bin's problem-solving speed was comparable to his, the answers were all correct, and the problem-solving formula was very standard!
Talented people come out from generation to generation in the country, and one blue one is better than another blue one. It is really awesome for young people!
There was joy in Professor Gao's eyes, after all, Li Bin was considered half of his student!

"Huh? Huh?"

Professor Gao, who was casually looking at Li Bin's test paper, suddenly changed his face.

Professor Gao stared intently at the penultimate practical test question on Li Bin's test paper.

"This..., why have I never seen this kind of problem-solving method? Why is it different from my problem-solving method?"

"Old Gao, what's the matter?" An old professor next to him asked in a low voice when he saw that Professor Gao's expression was not right.

"This..." Professor Gao lowered his head and walked aside quickly before speaking: "Li Bin has an application question, and the way I solved it is different."

"Ah? This..." The old professor's expression changed.

Asking the principal Qi Cheng who came over, he hurriedly asked Professor Gao: "You mean... Li Bin... did something wrong?" Qi Cheng looked troubled.

"Not really." Professor Gao frowned: "Maybe it's just that my way of solving problems is different."

After speaking, Professor Gao sat back at the desk and began to reverse the calculation by relying on Li Bin's problem-solving formula.

A group of old professors and the principal Qi Cheng stood aside and watched nervously. With Professor Gao's extensive knowledge of mathematics, he had never seen Li Bin's problem-solving method. Could it be that Li Bin did something wrong?
At this time, everyone was very worried, as if a huge rock was hanging in their hearts.

Mathematics is Li Bin's best subject!If Li Bin can't get full marks in mathematics, how can he compete with Hodge Spee?How can you break the record?
Professor Gao frowned and calculated on the scratch paper.

Once you have the formula to solve the problem, reverse calculation is much faster than doing a normal problem.

When Professor Gao was working backwards on Li Bin's problem-solving formula, he was also verifying the standardization and true verifiability of this formula.

Not long after, Professor Gao laughed while holding the draft paper in his hand, with unexpected surprise in his eyes.

"How is Lao Gao? Is Li Bin doing nothing wrong?" An old professor beside him asked in a hurry.

"Professor Gao, Li Bin..." Principal Qi Cheng also looked at Professor Gao.

"Principal, don't worry! Li Bin did nothing wrong!" Professor Gao said with a smile, "Li Bin... really, really gave me an extra surprise!"

"Then what happened to you before? Were you so surprised?" A professor next to him snorted: "Old Gao, tell me what happened?"

"Li Bin, kid..." Professor Gao held the draft paper in his hand and danced happily. If it wasn't for Li Bin who was still taking the exam, he might have shouted excitedly.

"This application problem, Li Bin's problem-solving method is a problem-solving method that I have never seen before." Looking at the principal and professors around him, Professor Gao explained in detail.

"Following my reverse calculation of the problem-solving method, I found that Li Bin's problem-solving method is not only very standard, but also seems to be more standard and simpler than my problem-solving method."

Speaking of this, Professor Gao looked at Li Bin in admiration: "This kid... is really a genius!"

(End of this chapter)