Asa Qian carried his luggage into the dormitory, and when he went up the stairs, a bald boy who came down from above hit his suitcase, and the boy spit out a cigarette, "Are you blind, don't you see anyone coming down?" Asa Qian looked at the box that he fell to the ground, "Pick it up for me" Asa Qian looked dark and had a gloomy face, "I repeat, pick it up for me." The bald head smoked a cigarette and spit a cigarette in Asami's face, "If I don't pick it up, what can you do to me?" As soon as Qianqian raised his hand and pinched his neck, he pushed him straight to the wall, and controlled him in the corner of the wall, with a bald head and a golden star, "Do you know who I am?" Asa Qian's face approached him, his eyes were full of evil energy, his hand was hard, his bald face was red, it was difficult to breathe, his cigarette butt fell on Asa Qian's arm, Asa Qian's eyes did not blink, he lowered his head and pretended to blow inadvertently, and the cigarette butt went straight into the bald head's ears and nose. Just when the bald head was delirious, Asa Qian let go of his hand, the bald head slid down against the wall and took a big breath, Asa Qian picked up the box and patted the dust, and when he left, he approached the bald head and said in his ear, "Don't mess with Lao Tzu, when Lao Tzu touched the gun, you were still drinking milk." The bald head looked at the back of Qianqian, and his eyes revealed hatred.

Shallow Qian slanted with a schoolbag on his back, his hands in his pockets, and he didn't forget to play the ball when he met a classmate on the way, and the last shot ball went in. The chic appearance instantly killed a girl's heart, Qianqian chewed gum and moved his neck, and took out his hands to make preparations, and then he turned around and kicked sideways at a 360 degrees, and the bag on his shoulder with one hand drew an arc in the air, and the football that flew from a distance flew back again, and the corners of Qianqian's mouth were slightly raised. Glancing at the girls around him, he put his hand in his trouser pocket again, and walked straight up to the group of girls, and then he stood still in front of a girl, and smiled evilly, "This young lady, do you have a crush on me?" Liuyi also smiled, "This son, do you have a crush on me?" Asa Qian approached Ryuyi, with a smile on the corner of her mouth, and her eyes were gentle, "Yes, I fell in love with you, how about it?" Be my girlfriend. The girls next to her all screamed, and Ruyi couldn't help laughing, "I still have to think about it." "Asa Qian pretended to frown" Consider? Am I not handsome enough? "The shallow and deep eyes fascinated a group of girls "Together, together, together" The surrounding girls shouted. Asa Qian catered to them, "Promise me!" Liuyi rolled her eyes, "Okay, I'm reluctant to agree!" ”

Lingling sat in the playground not far away, wherever there was Liuyi, he could see him, he looked at Liuyi with a sweet and happy smile, he held her favorite bell in his hand, the green light was even brighter in the sun, but its original owner no longer came to admire. Lingling got up, turned around, and turned his back to them, a scene he didn't want to see. Lingling sat in the classroom, the teacher was talking energetically, Qianqian came in with a schoolbag, everyone looked at him, Lingling looked at him for a second, and the bald head sitting on the side was even more hateful, when the teacher asked questions in class, the bald head wanted to embarrass Qianqian, and led the teacher's question to Qianqian, "Teacher, that classmate has objections." "Qianqian raised his eyes and met the bald head's eyes unexpectedly, and the bald head was vengeful." That student, how does cardinal utility theory derive the demand curve? The teacher asked Asamichi, and Asa Qian stood up, and God knows what he could answer if he didn't read high school. The teacher didn't speak when he saw that Asa Qian, "You can ask your classmates to help you answer, provided that the answer is correct." The classmates whispered, "I don't think I have learned this question yet, do you know?" "Did the teacher deliberately make things difficult for him?" "Why" "I guess it might be because he was late" "Ah, then he was miserable, and if he didn't answer, his usual grades must be zero." The class started to talk, but they didn't dare to stand up, not because they didn't have a little desire to help others, but they really didn't know how to answer. Asa Qian listened to a qiē in his ears. Yin Xiao, Yu Li, and Yu Yi stared at each other, and suddenly, Lingling stood up, "I can help him, cardinal utility theorists derive the consumer's demand curve based on the law of diminishing marginal utility and the conditions of consumer equilibrium.

They argue that the demand price of a good depends on the marginal utility of the good, thus forming the general characteristics of consumer demand, that is, if a consumer has more quantity of a good and the less the marginal utility of the good to him, the lower the price that the consumer is willing to pay for an additional unit of the good; The price that a consumer is willing to pay for a certain quantity of a good if the marginal utility of a certain quantity is greater. Due to the law of diminishing marginal utility, the quantity and price of a certain commodity purchased by consumers always move in the opposite direction.

Under the condition that the marginal utility of money remains unchanged, rational consumers, in order to achieve its equilibrium, that is: MU/P = α (making the marginal utility of money equal to the marginal utility of the last dollar spent to buy any kind of commodity), increase the purchase of commodities when the marginal utility of commodities is greater than the marginal utility of money, so that the marginal utility of commodities decreases until the marginal utility of commodities and money is equal, in this process, the demand price of commodities and its marginal utility are decreasing in equal proportion.

Because of this, there is an inverse relationship between the amount of consumer demand for goods and the demand price of goods, and this relationship leads to a downward slope of the demand curve to the right with a negative slope." Qian Qian looked at Lingling in silence, Lingling finished speaking in one breath, and didn't care about everyone's reaction, the teacher was stunned, Yin Xiao smiled as a matter of course, who is Xinuo, this is Xinuo, never forget, it is exaggerated that he may have finished studying his books in four years of college, and Yu Li's adoring eyes were about to melt Lingling. And in Yu Yi's opinion (sure enough, the family is a monster, even if Xining's IQ is 200, my brother can even answer such a specialized question.) It's not easy to mess with, you have to stay away from it in the future. The teacher came to his senses, "It's really better than blue, what's your name?" "Xino!" Qianqian wrote down this name in his heart, this person is the person who was going to change Liuyi's wind chimes that day, why did he want to help, Qianqian wondered if it was because of Liuyi. In Lingling's heart, although Yuxi loves others, as long as she loves it, no one can hurt her, so her heart will hurt, however, Lingling knows very well that it is himself who hurts in the end.