某公司正在考虑购买并开发—个铁矿，该铁矿目前的出售价格为3000万元，初始开发成本是30000万元。公司预期在未来若干年内每年可以采矿20万吨。每吨的价格为400元，每吨的采矿成本为180元，由于该公司过去的减免税额足以使该项目未来不必纳税，该公司可以将来自采矿项目的经营现金流量视为永续年金。
该公司的投资顾问分析认为，明年铁矿石的价格可能会提高到每吨550元，也可能每吨价格降低至320元。该项目被要求的最低报酬率为10%(其中无风险报酬率为4%)。
要求：
(1)利用二叉树期权定价模型计算分析该项目是否应该立即投资。
(2)如果初始开发成本提高为40000万元，其他条件不变，利用二叉树期权定价模型计算分析该项目是否应该立即投资。
There are advantages in 1997, if you want to look for them. The air is cleaner, and there seem to be fewer colds. The crime rate has dropped. With the police car too expensive, policemen are back on their heats. More important, the streets are full. Legs are king, and people walk everywhere far into the night. There is mutual protection in crowds.
If the weather isn’t too cold, people sit out front. If it is hot, the open air is the only air-conditioning they get. At least, the street lights still burn. Indoors, few people can afford to keep lights burning after supper.
As for the winter—well, it is inconvenient to be cold, with most of what furnace fuel is allowed hoarded for the dawn. But sweaters are popular indoor wear. Showers are not an everyday luxury.
It is sore in the suburbs, which were born with the auto, lived with the auto, and are dying with the auto. Suburbanites from associations that assign turns to the procurement and distribu
A. Because the farmers will need a lot of money.
B. Because it will need money to buy oil.
C. Because it will have too much food for its own use.
D. Because it wants to help other countries.
For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements. every kind of historical knowledge).
Apart from these sciences is philosophy, about which we will talk later. In the first place, all this is pure or theoretical knowledge, sought only for the purpose of understanding, in order to fulfill the need to understand that is intrinsic and con-substantial to man. What distinguishes man from animals is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn’t be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance, because they also contribute to defining him
A. were mathematicians
B. worked with electricity
C. were interested in navigation
D. were unaware of the value of their studies
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