Chapter 2 Teacher, you really have a way!
After all, Ning Chen had just experienced several hours of intense study, and the energy consumption was undoubtedly huge.
This made Ning Chen fall into a deep sleep quickly.
......
Time passed day by day, and Ning Chen gradually mastered the way to enter the flow state.
As long as he discards all external interference and allows himself to focus on what he is doing, Ning Chen will naturally enter a state of flow.
After a certain period of training, even if the surrounding environment is not so quiet, it will not affect Ning Chen's study.
Of course, the flow state cannot be entered indefinitely. Once Ning Chen's energy drops seriously, he will not be able to maintain his full concentration.
Therefore, Ning Chen must combine work and rest so that he can enter more of a flow state.
Calculated in this way, although Ning Chen’s daily study time is not too exaggerated, he can always maintain high learning efficiency. The learning effect is much better than burning the midnight oil to read.
In a week's spare time, Ning Chen has completely mastered all the knowledge points of "Advanced Mathematics (Part 1)" and has completed most of the questions in the book.
Although this speed is not particularly fast, for Ning Chen, it is already very efficient.
In the advanced mathematics class on this day, the advanced mathematics teacher He Sheng was explaining the course about L’Operta’s Law.
“When we use L’Hobida’s rule, we should simplify the function as much as possible, pay attention to using equivalent infinitesimals, and isolate factors with non-zero limits.”
“Use equivalence Infinitesimal substitution, replacing complex function product factors with equivalent power functions. ”
"If the limit limf'(x)/g'(x) does not exist, then Lópida's law is invalid..."
Ning Chen had already mastered this knowledge very well, so he did not attend the lectures, but went to work on his own. I was busy writing the questions.
While listening to the lecture, it was difficult for Ning Chen to enter the flow state, let alone the content that Ning Chen had already studied by himself. Self-study was naturally a better choice for Ning Chen.
During the break in the big class, a few students sneaked out of the classroom with their schoolbags, because the teacher had already called their names in the first period, which meant that it was very safe to skip class in the next period. of.
But what they don’t know is that this little trick can’t be hidden from the teacher’s eyes.
"There are thirty minutes left. I won't lecture anymore. We will take a short test. This test will be included in the usual score. Students who have finished answering can leave directly after handing in the paper without waiting until the end of get out of class."
As he spoke, He Sheng closed the classroom door, found a few questions on the computer, and projected them on the big screen.
Hearing He Sheng’s words, the students in the classroom couldn’t help but sigh.
“Fortunately, I didn’t skip class this time, otherwise my usual score would have been reduced by five points.”
“It’s too late to inform those students who skipped class now. Teacher He has already closed the door. , obviously don’t want the students who skipped class to come back.”
"And if you hand over a paper and take away one person, you can't help others to answer questions. Teacher He really has a way."
After everyone whispered for a few words, they all focused on on the big screen.
After all, a quiz is different from a simple roll call. You can only get points if you answer correctly.
Hearing that a small test was about to take place, Ning Chen also stopped answering questions and raised his head to look at the big screen.
Ning Chen remembered that in his previous life, he had fallen into this trap for skipping classes and was deducted five points from his usual score.
At that time, Ning Chen also complained about the "insidiousness" of the mathematics teacher, but after all, this was the power exercised by university teachers under their own responsibilities, and it was understandable. After glancing at the questions of the quiz, Ning Chen didn't feel any pressure.
These are the types of questions that Ning Chen has already done. They just changed the questions slightly. Ning Chen can solve these questions easily.
Tearing off a piece of paper, Ning Chen quickly answered.
After projecting the question on the big screen, He Sheng was not idle, walking back and forth in the classroom aisle.
For this kind of small test-level exam, the proctoring will definitely not be very strict, but He Sheng doesn't want everyone to plagiarize from each other casually.
These questions are all composed by He Sheng himself, and they are all calculation questions and solution questions, which also maximizes the difficulty for students to plagiarize from each other.
The overall difficulty of these questions is not very high, but because this small test was a bit sudden, many students were not prepared, either secretly flipping through the textbooks, or squinting at the classmates next to them.
Ning Chen kept his head down and answered the questions without hesitation, without any pause at all.
“The first question can be solved by first decomposing it into a 0/0 type unfinished formula, and then using the equivalent infinitesimal and L’Hôpital’s law.”
"For the second question, first make a trigonometric transformation to eliminate sinx-sinα, and then use L'Obitat's rule."
"The third question has a slight change, it is a 0·∞ type, but as long as this is a slight transformation... ”
Chen Tianpeng, who was sitting next to Ning Chen, couldn’t help but marveled as he watched Ning Chen quickly answer the questions on the big screen.
"As expected of a top student who went to the library when he first entered college. He is different from the scumbags like us."
When Ning Chen had finished three questions, Chen Tianpeng I just found the idea for the first question through the examples in the textbook, but I haven't started writing yet.
Fortunately, there was such a big boss sitting next to him. Chen Tianpeng simply gave up answering the questions by himself and directly copied Ning Chen's answer.
But after all, He Sheng has been patrolling back and forth, and Chen Tianpeng can't copy it too obviously, so he can only minimize his movements.
In less than ten minutes, Ning Chen finished all the questions.
Writing his name and student number on the paper, Ning Chen picked up the paper and school bag and prepared to hand in the paper.
After all, the teacher has said that class can end early after handing in the papers. Ning Chen doesn’t want to waste time in the classroom and has to go to the library early to complete tasks.
Chen Tianpeng did not expect that Ning Chen would hand in the paper so quickly. At this time, it was too late to call Ning Chen back, and he couldn't help but regret that he had not copied more just now.
When they saw someone getting up to hand in their papers, the students in the classroom also looked surprised.
“Have you finished the answer so quickly? I haven’t even written a third of it yet!”
“It’s only been ten minutes. Even if I copy the answer, I won’t be so fast. Right? ”
“You should just skip the questions you don’t know how to answer, but you’re so anxious to hand in the paper. Don’t you want to do it normally? ”
He Sheng was a little surprised to see someone handing in his paper so early.
Although these questions are not too difficult, the speed of answering them is indeed too fast for a freshman who has just completed a new course.
“Aren’t you going to check again?” He Sheng asked.
(End of this chapter)