Ike's utility function is U(x;y) = 25xy. He has 12 units of good x and 8 units of y. Ben's utility function for the same two goods is U(x;y)=4x+4y. Ben has 9 units of x and 13 units of y.

Mouse potato means a person who spends a great deal of time using a __________.

已知方程sinz-xyz=a确定了隐函数z=f（x，y），求∂z∂x，∂z∂y及∂2z∂x∂y．

_________________ refers to that nominal interest rates (i) in each country equal the required “real” rate of interest (r) and the expected rate of inflation over the period for which the funds are to be lent (l); that is, i = r + l. A: Fisher effect B: Fisher function C: Fisher rule D: Fisher theory

假设总生产函数为Y = AK^αL^β(^α和^β分别表示K和L的指数),那么我们可以将产量Y的增长分解为 A: ΔY/Y= ΔA/A +α(ΔK/K)+β(ΔL/L) B: ΔY/Y= ΔA/A +ΔK/K+ΔL/L C: ΔY/Y=α(ΔK/K)+β(ΔL/L) D: ΔY/Y=ΔK/K+ΔL/L

Hè năm nay, trường được sửa( ): tường các lớp quét vôi trắng tinh, sạch sẽ, y như mới xây.() A: chữa B: sang C: lại D: cho

Using the new technologies can help create a learning culture in which the learners enjoy enhanced interactivity and connections with others.

Supervised Learning is achieved using the (). A: labelled datasets B: unlabelled datasets C: normal datasets D: selected datasets

糖尿病患者血糖低于多少是低血糖:() A: 5.6mmol/l B: 4.1mmol/l C: 3.9mmol/l D: 3.0mmol/l E: 2.8mmol/l.

It is time the doghow to behave properly. A: is learning B: learns C: learned D: to learn