已经推荐给学弟学妹了! 我这个专业特别难, 文献看的我真的头都炸了, 所以没办法才找到你们家, 很幸运能碰到你们, 要不我都怕我毕不了业. wherever s0  is The present inventory price, T is the perfect time to maturity, r will be the constantly compounded chance-free of charge amount, q is the c