29. Correct solution of wrong questions

Zhang Yi was answering the question, of course he wouldn't lean over to look at it, and he couldn't waste two hours, so he took the topic he was studying and started thinking.

Zhang Yi followed the question, there was a pause in the middle, most of them were calculating, the things I remembered were just seen this week, I don't need to think about it more, if I write out the operation steps, it really takes up a piece of scratch paper, this is a physics exam, not a math exam, the focus is on analysis according to the calculation results.

Zhang Yi studied with Professor Wang for a year, repeatedly trained the calculation of mechanics, and the calculation in his mind was very fast, when sailing on the windsurf, he could measure the wind and waves, and he could also calculate the value of the force on his legs, which was also the basis for the Department of Physics to see Zhang Yi's second paper, and to give Dr. Zhang Yi the basis, because in terms of mechanics, Zhang Yi is already qualified enough.

This exam was very sudden, it was printed without preparation, there was no front and back of the test paper, Zhang Yi changed to the second one after writing one, and when he changed to the fifth, Professor Zhao also stopped from his own research to see Zhang Yi's progress in answering the questions.

He looked at the time, it was only a little more than an hour, and he had already completed four sheets, and secretly thought to himself: This answer speed is really fast, it depends on the correct rate.

Of course he didn't bother Zhang Yi, and he didn't make a sound, just sat in his position in a daze, and then thought that he had changed the topic, and the calculation results had not been calculated, and he had to calculate it if he wanted to correct it.

He had the impression that it seemed like it would take him an hour and a half to complete the fourth page, and Zhang Yi was obviously faster than him. After he found the test paper on the computer, he suddenly had an idea, that is, when Zhang Yi finished it, he would also print a copy and make it himself, and see if he could do it so quickly.

This test paper is three hours, and he deliberately said two hours to Zhang Yi, because Zhang Yi only read it for a week, and obviously just read it once to take the exam, he had to be a little embarrassed, so that Zhang Yi could have a long memory, and he couldn't be exaggerated in his studies.

He is not difficult, because he can complete the exam paper in two hours. However, looking at Zhang Yi's progress, it can be done in an hour and a half, and he came up with the idea of comparison.

was stunned, only to find that Zhang Yi had changed to the sixth card and had already answered the third question, that is, it would be completed in less than ten minutes.

Professor Zhao looked at the time and waited with peace of mind. As a result, Zhang Yi was stunned on the last question, thought about it for four or five minutes, and then began to continue to write, and the blank space left in the end was not enough, so he directly took a piece of scratch paper and wrote, and after writing half a piece of paper, he ended answering the question, and the last question took Zhang Yi twenty minutes more, and the whole exam took 1 hour and 56 minutes.

After Zhang Yi finished writing, he stood up, sorted out the test papers, picked them up and went around the table and handed them to Professor Zhao.

After the exam, Zhang Yi particularly admired Professor Zhao, this test paper is the essence of this book, I feel that all the knowledge points are included, if you can't understand it thoroughly, you can't complete the answer at all, except for the last question is a little difficult, everything else is normal, every result, the basis for the comparative discussion you need, the book is also listed, you can remember, of course, you can answer it.

The last question may be similar to the additional test question, the calculation is very complicated, the result exceeds the standard in the book, and it needs to be analyzed and eliminated from many aspects, and Zhang Yi's final result is that the fault code is xxxx-2p.

Professor Zhao only glanced at the test paper and found it pleasing to the eye.

Is this an exam paper? It's calligraphy.

He glanced at the first question, the formula is correct, if the calculation is correct, the discussion is completely correct, he nodded and handed the middle volume to Zhang Yi and said: "You are very attentive, the upper volume is still kept, take the middle volume to read now, if I finish correcting and find that there is a problem, I will let you continue to consolidate the upper volume." I'm here to answer your questions from 3 to 5 p.m. on both weekends. ”

Zhang Yi bowed to him and left with the book.

Professor Zhao did not immediately correct the test paper, which has no standard answers, and he also needs to do it first. He didn't change the numbers for a coincidence, but at random, and the result was not clear to him.

He doesn't like to be ingenious, because science can't be ingenious, as long as each number is within the range, there will be an answer, what is the answer, how to analyze it, this has to be calculated to know, anyway, there are knowledge points in the book.

After the professor printed it out, he looked at the table and began to do the questions himself, he is a very strict person, and he has prepared a few pieces of scratch paper just like the students, and all calculations must be calculated on the spot.

Of course, he can also do quick calculations, and he answers questions very quickly, and when he reaches the last question, it is only one hour and fifty minutes.

He is not as fast as Zhang Yi, because Zhang Yi has studied with Professor Wang, a master of quick arithmetic, for a year, and he is young, and he must be faster than him in quick arithmetic, and Zhang Yi is faster than him, both of which he can't compare, and his advantage is that he doesn't need to use his brain to think.

When he finished reading the last question, he was stunned, the numbers in it were all changed, and there was a variable that turned out to be 29, and he remembered that it was changed to 19, but the result was that this set of questions was printed out as 129, that is, he actually forgot to delete the 2.

There are also rules for his modification, and this 129 should be a value that is out of range, but he saw that Zhang Yi was answering, so he didn't bother much and began to calculate.

Then he found that this number was really difficult to calculate, and the result of the calculation was really beyond the standard range, and it should be impossible to reach the value.

He didn't look at how Zhang Yi answered, but thought about it, what would happen when he encountered this kind of exceptional result, and then he found that if it was really in the pre-stored device, adjusted to the variable of 129, the device would crash because it couldn't be calculated, and then he couldn't analyze it.

After thinking about it for a long time, he had to shake his head, secretly sighing that he was also old, his concentration was much worse, and he actually forgot to delete the 2, and glanced at the time, two hours and 17 minutes, 21 minutes more than Zhang Yi completed the test paper.

He took out Zhang Yi's test paper, first read the last question, and the calculation result was the same as himself, but Zhang Yi did not say that it was dead, but made various exclusionary explanations for this conclusion, and the final result was that the equipment calculation module was calculated in an infinite loop until it was heated and burned, which caused the detection failure of the higher-level equipment, and the fault code was xxxx-2p.

After Professor Zhao saw Zhang Yi's conclusion, he also felt that this was the case. But he just found out that it was a crash and didn't continue, and when he felt that it was over, he suddenly felt very embarrassed, and then felt panic in his heart.

Whether I have been trapped in this book for too long, why it is beyond the content of the book, I will not think about it again. There has been no progress on the recent topic, and if you are bound by what you have summarized, maybe you should jump out of these contents and re-study it from a different angle, and maybe you can find a way.

When Professor Zhao thought of this, he felt that a window suddenly opened in his mind, and he had a lot of ideas in his heart, so he immediately put down the test paper and began to study his topic with new ideas.

This topic has been studied for a long time, and all kinds of hypotheses have been tried by him, and after he has a new idea, he doesn't need to take many detours, obstacles that have puzzled him for a long time, and many nodes that are stuck in him, just avoid them directly, and then solve them logically.

Professor Zhao listed all the key points of the topic, checked all the details, found that there was no problem, and then relaxed, and then felt hungry, and when he looked at the time on the computer, he realized that the night was already very deep.

He shook his head, he, an old man, was able to stay up until four o'clock in the morning, and he was still so energetic, this has not been a thing for many years, it seems that after taking medicinal food for half a year, it really works. Zhang Yi, this kid's canteen, is really good, no wonder so many professors like him.

As soon as Professor Zhao's spirit was relaxed, he felt sleepy, he was very rigid, he usually went to bed on time at ten o'clock at night, he hadn't stayed up late for 20 years, so late, he didn't want to go back, so he took off his coat from the hanger, then turned off the lights, covered his body, and prepared to lie on the sofa until dawn and then go home.