Secondly, Provide one option price demarcation line judge the method base on the premise that the exchange rate change obeys two forks of tree models.
并在汇率变动服从二叉树模型的前提下给出了一种期权价格界限判断方法；
2
Pointing out that only 4,000 chopsticks can be carved from a 20-year-old tree, he even went so far as to suggest that restaurants offered metal knives and forks instead.