布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数,尤其是波动率。
I'm a human being and I fall in love and sometimes I don't have control of every situation.
我不是谈话,我是歌曲。
非洲艺术家不是代表,而是个体的声音。
If you have any doubt at all about being able to carry a load in one trip, do yourself a huge favor and make two trips.