"Aren't you afraid of dozing off during the afternoon exam?" Chi Li asked, rubbing her sleepy eyes.

Xie Qingyue made a few strokes on the scratch paper, frowned and sighed: "How can I be in the mood to sleep, if I can't get on the 603rd midterm exam this time, my mother will collect my mobile phone, Shen Ling's new album has not come out yet, and there are still a few novels and a few dramas that have not been chased, how can I live if I collect my mobile phone... Just this math, my shortcomings, hey, my head is going to be bald. ”

Not up to 630 →_→

"Which question you don't understand yet?" Chi Li looked at her set of mistakes.

Listening to Chi Li's meaning, it seems that he wants to discuss it with her. Xie Qingyue knew that Chi Li was doing math problems every other day, and she seemed to be very interested in math, although she usually only had math quizzes, she did well every time, otherwise Huang Qingqiu wouldn't like her so much, so her math grades were okay.

Xie Qingyue pointed to a question with a pen, and then pointed to his scratch paper: "This, I haven't calculated it, every time I calculate it, it's stuck, the teacher talked about this question in class, I didn't understand it at the time, and I forgot to ask the teacher after class." ”

Chi Li glanced at the question, this is a series of questions, from the point of view of the difficulty coefficient, it is generally placed in the finale position, and it is normal for ordinary people to not be able to calculate it.

"You're miscalculated. Chi Li picked up the pen and ticked Xie Qingyue's draft, and said fluently, "This discussion k value here, it should be k=2,3,... m, lnk/k≤lnq≤lnk/k-1, then calculate the value of f"(x), then make f"(x)=0, get x=1, and then make a table to prove that qk-1≤k is true, discuss whether q exists, and finally calculate the maximum value of m. ”

Xie Qingyue reacted to the number in his mouth for a few seconds, and suddenly his eyes widened and he suddenly realized: "So that's the case! I know! I'll try it first." ”

Xie Qingyue did a quick calculation on the scratch paper, and after a minute, she put down the pen with a happy look on her face: "It's finally calculated! ”

As soon as Chi Li and Xie Qingyue came out of the classroom, a girl walking with her head down and reading a math workbook bumped into Xie Qingyue.

The exercise book fell and smashed on Xie Qingyue's foot. Xie Qingyue was slightly stunned when she saw the girl's face, and then quickly bent down to help her pick up the exercise book and handed it to her: "I'm sorry, I'm sorry!"

"I'm sorry. The girl knew that it was the person she bumped into first, and she apologized and left in a hurry, still glancing at the questions in the workbook a few times.

After the girl walked away, Xie Qingyue excitedly tugged at Chi Li's sleeve: "Lili! I bumped into Jiang Wanqing!! which means that I will definitely be able to do well in mathematics this time! You can too!"

Chi Li was embarrassed: "Borrow your auspicious words." ”

She knew Jiang Wanqing, and on the first day she came to school, Xie Qingyue told her that Jiang Wanqing was the top math student in Class 1 of the second year of high school, and the only person in the middle and high school who was qualified to participate in the World High School Arcane Competition this year.

And there are 5 classes on the first floor, and the 5th class of the second year of high school and the 1st class of the second year of high school are on the same floor, but the two classes are on the very edge, and there are stairs on both sides, so there is very little time to meet on the top, and occasionally you can meet in the office or canteen.

Chi Li came to the outside of his examination room, and saw that several people were not in a hurry to enter the examination room, gathered together, and said mysteriously: "I just touched Jiang Wanqing with this hand, and the multiple-choice questions will definitely be able to cover fifty points in a while." ”