Cyclonus: I can summon villains infinitely

Given the function f(x)=a(x-1)-1nx+1.

(1) Find the monotonic interval of f(x);

......

"Fuck, um............."

An Xia was staring at the test paper in a daze, holding a pen to his head.

An Xia has basically been living in Meng Yu's house recently. Firstly, she has made up her mind to take the college entrance examination, secondly, she can take little Huangyao for a walk every day, and thirdly, Aunt Cui's cooking is really delicious.

Thinking about my own home again, the food cooked by Old Donkey Face is a mess, and the food cooked by my mother is also a huge mess. Only An Xin’s cooking is edible, and An Xin is not home every day now.

"Uncle, uncle~" A soft voice came, and An Xia looked down and saw Huang Yao lying on her thighs with a lollipop in her hand.

"Call me brother."

"uncle."

"elder brother."

"uncle."

"Little guy, you should eat less sugar, or you'll get cavities." An Xia stopped correcting him because he always ended up failing anyway.

"It's not for Yaoyao to eat, it's for uncle to eat."

"Thank you, Yaoyao. Yaoyao, what is the tigress doing outside?" An Xia asked in a low voice after taking the candy.

However, Huang Yao did not reply, but just widened her eyes with an expression that seemed a little frightened.

An Xia didn't notice Huang Yao's expression and continued, "Yaoyao, can you go and steal my phone?"

"Oh~ Uncle, you're done~ Sister is behind~"

Huang Yao pointed with her little hand, her expression very cute. An Xia finally realized the seriousness of the matter. She stopped talking and lowered her head to do the questions.

Bang.

A book hit An Xia on the back of her head. "Tell me, who are you calling a tigress?"

"Oh~ Sister Meng Yu, when did you come~"

Turning around, An Xia also asked in Huang Yao's voice.

"Oh my god, you are so disgusting!!!"

"Hey, stop hitting me, I want to study."

"You go to hell!!!"

"If you hit me again I'll hit you back."

An Xia and Meng Yu were playing around, and Huang Yao was grinning foolishly while holding a lollipop.

bang bang bang-

Suddenly there was a knock on the door.

...

The living room was eerily quiet.

Today, Lao Mo changed into a new set of clothes and was sitting on the sofa nearby, feeling uneasy.

Meng Yu sat on the sofa on the other side, while An Xia stood beside him.

Huang Yao hid behind An Xia and looked at Lao Mo curiously.

"Well, how about a cup of tea?" Meng Yu spoke first to break the awkwardness.

"No, no." Lao Mo waved his hands quickly.

"Yaoyao, look, this is your father."

An Xia squatted beside Huang Yao and said.

Huang Yao still stood there, looking at him motionlessly.

"Yaoyao, I, I am a father." Lao Mo's voice trembled a little. He had never thought that having a child could be so wonderful.

"Dad...Dad..."

"Oh!" Lao Mo was so excited that he almost cried.

An Xia also wiped the corners of his eyes. He hated this kind of scene the most, so he took out his cell phone and ran to the side to make a call.

The father and daughter met each other, feeling sad and touching, but Lao Mo still felt a little uncomfortable staying here.

He felt a little guilty. Thinking about what he had done to help Gao Qiqiang during this period, and then thinking about how he excitedly ran to the police station when he was just released and said, "Lao Mo has reformed." He felt very uncomfortable.

"You really don't want to stay for dinner?"

"No, no, I just moved today and I wanted to go back and clean up."

"Okay then." Looking at the anxious Lao Mo, Meng Yu no longer forced him.

"Wait a minute!" At this time, An Xia's voice came: "Wait for me!"

Downstairs, a van stopped at the door of the unit.

Li Fengtian opened the window and stuck his head out to wave at the corridor: "Brother, the stuff is delivered!"

In the corridor, An Xia was walking in front holding Huang Yao's hand, while Lao Mo and Meng Yu were chatting awkwardly behind them.

"Uncle, what are you going to give me?"

"you guess."

"Mm~food."

"Guess again."

"Hmm~toys."

"Guess again."

"new clothes."

"Guess again."

"Ah, uncle, you won't give me the test paper."

Perhaps it was because she had seen too much conversation and interaction between An Xia and Meng Yu during this period of time, the most terrifying thing Huang Yao could think of in her mind now was the test paper.

"Of course not. Do you think my brother is that tigress?"

"No, uncle is the best."

Hearing Huang Yao praising herself, An Xia was also very happy and shouted to Li Toyota: "Old Tian, ​​open the car door!"

"Okay!" After receiving the order, Li Toyota happily opened the door.

When Huang Yao saw everything in the car, she opened her mouth wide.

She had a feeling that it was unreal. The car was filled with snacks, clothes, toys, and in an inconspicuous corner there was a plasma TV and a computer.

At Meng Dehai's house, little Huang Yao likes watching TV the most, but turning off the TV does not have such a big direct impact on the child, so An Xia threw it in the corner.

"Wow! Uncle, there are so many things!"

Walking behind Meng Yu, Lao Mo was also dumbfounded and ran over quickly: "Brother Xiao Xia, these things..."

Grabbing Lao Mo's arm, Li Toyota took two steps forward.

"Not just today, I will send these things to your house every once in a while in the future, Chen Jinmo, if you refuse, I will make sure you never see Yaoyao again in your life!"

In a voice that only the two of them could hear, An Xia spoke the most arrogant words in the most ruthless tone.

Lao Mo stood there in a daze, feeling like he had run into a lunatic. How could someone be so threatening?

"Okay." After hesitating for a long time, Lao Mo finally replied.

An Xia breathed a sigh of relief. He was almost scared to death. If Lao Mo really refused, he would not be able to really kill Lao Mo. It would be so embarrassing then.

On the side, Meng Yu was also speechless. She didn't hear what An Xia and Lao Mo said, but she was speechless about An Xia's way of spoiling the child.

After Lao Mo and Huang Yao got in the car, Meng Yu finally took out a bag from behind and handed it to Lao Mo:

"Well, Yaoyao can be sent to school soon. There are some enlightenment books in this bag. You can show them to the child in advance."

This time, Lao Mo didn't hesitate. He took the bag directly and glanced at An Xia.

It seems to be saying: Look, this is what a human being should do. Fortunately, I came out early, otherwise the child would have been ruined by you sooner or later.

Then, Lao Mo stepped on the accelerator and sped away.

"cough cough..."

At the original place, because the car was going too fast, a burst of thick smoke made An Xia cough.

Meng Yu also complained: "This old Mo is too impatient."

When Meng Yu turned around, An Xia's eyes were already red. She hurriedly said, "Oh my, the little baby is gone, and you, the big baby, are crying. Don't cry, don't cry, sister will hug you."

"Get lost!" An Xia pushed Meng Yu away and said, "Who's crying? I was poisoned by the exhaust gas."

......