老师这题里有明确表示要求的是弧弹性吗？一般点弹性和弧弹性的问法有什么区别

经济学 Q9 28min56s前后老师在说什么用品和一般物品相反 听不清 nai用品吗？

99题中eps为啥不加20% 不是po/e0吗.. 然后lastyear 要变成current year 哈

这里的阿尔法是指什么？

为什么选B呀，感觉AC也满足要求呀

题目里面是short方，如果改成long方的话，答案是不是不变的？FRA是不是都是都是收到固定payment？

老师，18题根据npv profile一条斜向下的直线，为何不是折现率越小npv越大呀？这样想的错误在哪呀？

If the net cost of carry of an asset is positive, then the price of a forward contract on that asset is most likely: lower than if the net cost of carry was zero. the same as if the net cost of carry was zero. higher than if the net cost of carry was zero. A is correct. An asset's forward price is increased by the future value of any costs and decreased by the future value of any benefits: F0(T)=S0(1+r)T−(γ−θ)(1+r)T If the net cost of carry (benefits less costs) is positive, the forward price is lower than if the net cost of carry was zero. 没懂为什么选A。

问下这个为什么违反了CFA准则啊

在算出I/Y之后为什么不用考虑tax的因素？一般不是都要乘以（1-tax rate）的吗？请问这里不需要的原因是什么呢