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[单选题]
假定某市场的供给函数为Qs=-4+P,当价格为14时供给需求弹性为（)。
A.1.4
B.1.2
C.1.6
D.1.8
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.1.4
B.1.2
C.1.6
D.1.8
如果结果不匹配，请 联系老师 获取答案
更多“假定某市场的供给函数为Qs=-4+P,当价格为14时供给需求…”相关的问题
假定表2-2(即教材中第54页的表2―6)是供给函数QS=-2+2P在一定价格范围内的供给表：
表2—2某商品的供给表
(1)求出价格3元和5元之间的供给的价格弧弹性。
(2)根据给出的供给函数，求P=3元时的供给的价格点弹性。
(3)根据该供给函数或供给表作出几何图形，利用几何方法求出P=3元时的供给的价格点弹性。它与(2)的结果相同吗？
设某经济只有a、b两个市场。a市场的需求和供给函数为Qda=13-2Pa+Pb、Qsb=-4+2Pa，b市场的需求和供给函数为Qdb=20+Pa-Pb、Qsb=-5+4Pb。试确定：
(1)当Pb=1时，a市场的局部均衡；
(2)当Pa=1时，b市场的局部均衡；
(3)(Pa=1，Pb=1)是否代表一般均衡？
(4)(Pa=5，Pb=3)是否是一般均衡价格？
(5)一般均衡价格和一般均衡产量为多少？
1983年里根执政时，推行"实物支付计划"。以小麦市场为例，考察该计划如何奏效。
(1)假设需求函数为QD=28-2P，供给函数为QS=4+4P。P是小麦的价格，单位为美元/蒲式耳，Q是产量，单位为10亿蒲式耳，试求出自由市场均衡价格和产量。
(2)假设政府向农民支付小麦，鼓励农民将部分土地退耕，使供给减少自由市场均衡量产量的25%。用于支付的小麦来源于政府储备，数量等于退耕土地的收获量。农民可在市场上自由出售这些小麦。问农民的产量为多少？政府间接供应市场多少小麦？新的市场价格是多少？农民获益多少？消费者得益还是受损？
(3)如果政府不把小麦返送给农民，小麦将积压或变质。纳税人从该计划中受益吗？该计划存在什么潜在问题？
In 1983, the Reagan Administration introduced a new agricultural program called the Payment-in-Kind Program. To see how the program worked, let' s consider the wheat market.
a. Suppose the demand function is QD=28-2P and the supply function is QS=4+4P, where P is the price of wheat in dollars per bushel and Q is the quantity in billions of bushels. Find the free-market equilibrium price and quantity.
b. Now suppose the government wants to lower the supply of wheat by 25 percent from the free-market equilibrium by paying farmers to withdraw land from production. However, the payment is made in wheat rather than in dollars- hence the name of the program. The wheal comes from the government ' s vast reserves that resulted from previous price support programs. The amount of wheal paid is equal to the amount that could have been harvested on the land withdrawn from production. Farmers. are free to sell this wheat on the market. How much is now produced by farmers？ How much is indirectly supplied to the market by the government？ What is the new market price？ How much do the farmers gain？ Do consumers gain or lose？
c. Had the government not given the wheat back to the farmers, it would have stored or destroyed i. Do taxpayers gain from the program？ What potential problems does the program create？
A.政府应购买10单位X
B.政府应购买25单位X
C.政府的财政支出是750元
D.政府的财政支出是875元
假定利率市场为10%，某金融机构持有两种资产：(1)A公司的5年期债券，到期收益率为10%，简称A债券;(2)B公司3年期债券，到期收益率为13%，简称B债券。试计算：当该金融机构持有的资产中30%为A债券，70%为B债券时，该金融机构的加权平均到期日是多少？
假定表2-2是供给函数Q'=-2+2P在一定价格范围内的供给表：
(1)求出价格3元和5元之间的供给的价格弧弹性。
(2)根据给出的供给函数，求P=3元时的供给的价格点弹性。
(3)根据该供给函数或供给表作出几何图形，利用几何方法求出P=3元时的供给的价格点弹性。它与(2)的结果相同吗？
函数至少在取a、b、c、d四个参数值时与U形平均成本曲线相一致。
Suppose the long - run total cost function for an industry is given by the cubic equation TC =a+bq+cq2+dq3. Show (using calculus ) that this total cost function is consistent with a U - shaped average cost curve for at least some values of a, b, c, d.
