After dinner, Chen Xin was a little drunk and went back to his room to sleep.

Xiao Shuai lay on the bed and turned over the system.

"Name: Xiao Shuai. ”

"Gender: Male. ”

Well, there's nothing to say about that.

"Current Occupation: Consultant (Novice Entry-level)"

It seems that this profession can continue to advance in the future, not bad.

"Current total assets: 4889.5 yuan. ”

Xiao Shuai: "......"

Kind-hearted, I originally earned more than 10,000 yuan in the past two days, but the rent was 2,000 and a half, and I bought more than 3,600 clothes, plus pocket flowers, and there were less than 5,000 left in a blink of an eye......

"Money is not worth spending," Xiao Shuai shook his head and continued to look down.

"Current Light Opening Ability: Emoji Eyes. The mouth of the good that does not do the bad will be the soul. System ability: Learning function, consuming 1 red point per minute. ”

The eye of the emoji is very powerful, and this crow's mouth is even more powerful, but it will depend on the situation in the future......

As for this learning function, it is a good thing, and it will be used more in the future.

"Red Points: 522......"

The number of points is still small, and these points are enough to learn for less than nine hours if the learning function is really opened, plus you have to redeem the eye of the emoji......

I can't live this day!

"Well, fortunately, you can still be an accompaniment in the meeting," Xiao Shuai touched his chin and said, "Seeing that people are motivated every day, we have to work hard." Thinking of this, Xiao Shuai immediately asked the system-

"System," Xiao Shuai asked, "Can you get rid of the smell of alcohol on my body?" ”

System: "Yes, this function consumes 10 red points, and can only eliminate the smell on the body, does the host choose to use it?"

Really?

Xiao Shuai snapped his fingers: "It's okay!"

Speaking of which, it's okay to open the light, and it's natural to get rid of such a trivial thing as getting rid of the smell of alcohol. After deducting 10 red eyes, Xiao Shuai instantly felt refreshed - although he was still a little dizzy after drinking, at least he didn't smell of wine in his mouth, and such a drunk uncle would still be a Mao companion......

After sorting out the image, Xiao Shuai looked at the time, it was ten o'clock, and it was estimated that high school was about to study at night, so he began to wait.

Soon, the sound of going upstairs sounded, and then there was a knock on the door, Wang Xuan stood at the door and said, "Brother, are you here?" ”

"Here," Xiao Shuai opened the door, and his cousin Wang Xuan was standing outside, and immediately nodded: "Let's go, she carried it well yesterday, and she will work harder today!"

Speaking of memorizing the dictionary, there is nothing to say, Xiao Shuai is in line with the principle of taking people's money to eliminate disasters for people, the most important thing is that now that he has a goal in life, Xiao Shuai directly turned on the learning function to drive Wang Xuan and Zhang Chuchu to read there.

If you want to say that this feature is really good, learning a lot of times is an atmosphere, and you can learn to play the game over there......

Wang Xuan and Zhang Chuchu are both top students after all, Wang Xuan is doing questions there, Zhang Chuchu memorizes the dictionary and prepares for the next strongest student competition, Xiao Shuai has a learning function here, the dictionary has long been memorized, and after accompanying Zhang Chuchu to memorize for a while, Xiao Shuai casually picked up a high school math textbook and flipped it up directly.

"Speaking of which, I really haven't touched this high school math for many years," Xiao Shuai used the learning function, and learned it at this glance: "Oh, why do I suddenly feel that learning math is also quite interesting? Look at the letters on it, we used to know it, but today it actually feels like it knows us!"

The more Xiao Shuai watched it, the more interesting it became, and the whole person was invested in it, and his attentive expression even made people think that he was watching "Golden Vase Plum"......

"Hey, what's the situation with your brother?" Zhang Chuchu memorized the dictionary for a while, and then noticed Xiao Shuai's state: "Look at this high school math, you still watch the eyebrows flying?"

"Who knows," Wang Xuan was also confused, when did his cousin become interested in this? How's your dictionary going?"

Zhang Chuchu suddenly became excited at the mention of this, and said: "There is absolutely no problem now, your brother's learning state has brought me all the books, I have memorized almost half of the book now, and on the whole, it should not be a big problem to be on the show." What about you?

"The questions in the JS paper are indeed a bit difficult," Wang Xuan immediately shook his head, there are a few questions that I got wrong, why don't you help me take a look?

"Okay, I'll take a look," Zhang Chuchu took the question paper and looked at it-

"It is known that the function f(x) is an odd function defined on R, and when x>0, f(x)=|x-a|-a(a.......).

Zhang Chuchu picked up the pen and counted it there for a long time, but he didn't figure it out, and then shook his head helplessly: "I won't either." ”

"No wonder they all say that the JS college entrance examination is a hell mode," Wang Xuan stuck out her tongue in fright: "I think my level is okay, but it's still a lot worse to do this JS paper." ”

"Yes," Zhang Chuchu also sighed twice, and then smiled: "Don't think about it, after all, our college entrance examination is not so difficult." ”

The two little girls muttered a few words there, and then continued to do the endorsement of the question.

As a result, Xiao Shuai learned energetically, and in a blink of an eye, he saw a high school math problem on the side, and he started to do it without saying a word.

"That's the JS volume I just made!" Wang Xuan was stunned for a moment when she saw this posture, and then shouted, "Brother, can you do it?"

Xiao Shuai ignored her at all, took the question and started calculating.

"Question 1: Let f(x)=x2-2x+a. If the function f(x) has zero points in the interval, then the value range of the real number a is ......."

Xiao Shuai thought carefully about the mathematical knowledge he had just seen, and immediately began to write later: "The symmetry axis of the quadratic function is x=1, so the interval (-1,3) is symmetrical about the symmetry axis, and it can be seen from the image that if the function f(x) has zero points in the interval, then the real number a satisfies the inequality group, and the solution (-3,1]"

Then the second question: "It is known and f(1-a)+f(2a)0, so there is f(-x)=|-x-a|-a, and f(-x)=-f(x), so f(x)=-|x+a|+a, so the analytic formula of the function is, according to the three cases of a, a=0; a>0; A0, as can be seen from the image, A satisfies 2016>4a, that is, 0

Wang Xuan: "......"

"Isn't it??!" Wang Xuan's eyes were wide, and he stared at the rolling paper: "My brother actually made it?"