A perfectly competitive, profit maximizing firm has the production function y = K^1/4+L^1/4 Let p be the price of the output y; v the price of capital K, and w the price of labor L: (a) Determine the firm's input demand, supply, and profit functions. (b) Detemine the degree of homogeneity of the profit function in prices. Does the result surprise you? why or why not?
十分感谢你的回答。 大哥还有道题,你忙就算了吧,或者随便说一下思路。 A consumer's utility function is U(x; y) = x^a+ y^a where a > 0: (a) Determine limits on a which guarantee that you can appropriately use a Lagrangian to find the consumer's demand functions. In other words, for what (minimal) restrictions on is the second order sufficient condition for the consumer's constrained utility maximization problem satisfied?
【在 d*****g 的大作中提到】 : Set up a lagrangian, derive first order conditions, set the first order : conditions to zero and solve. Should be fairly straight forward. Good luck.
这里面appropriately use Lagrangian什么意思?用Lagrangian需要啥条件在这道题里 面?
f*8
15 楼
现在的手机有wifi direct模式,两个手机 直接建立无线连接,速度和wifi类似,比如我的galaxy note。 和传统ad hoc的差别,这里谈到了: Wi-Fi Direct: What You Need To Know http://www.pcmag.com/article2/0,2817,2371413,00.asp It is official: Wi-Fi Direct is here, and the nonprofit Wi-Fi Alliance is now certifying products as Wi-Fi Certified Wi-Fi Direct. Alliance members include Apple, Cisco, Intel, and other major tech vendors. Wi-Fi Direct is an emerging technology meant to meet the growing demand for easy, portable wireless network connectivity. It's peer-to-peer wireless networking, which means that devices such as notebooks, tablets, cameras, and printers can "find" one another and establish wireless connectivity without need of the presence of a wireless router, an access point, or a hotspot. How is it used? Imagine syncing your mobile device or laptop to a printer, digital photo frame, or TV without connecting to a Wi-Fi network. No worry about SSIDs or passwords to access them. There are a few key features to know about Wi-Fi Direct: •Wi-Fi Direct enlists a technology known as "Soft AP": Soft AP, in a nutshell, is software-based access point functionality built into Wi-Fi Direct certified devices. These devices are capable of routing and directing network traffic just like access points and routers. •Wi-Fi Direct is expected to provide superior connectivity over Bluetooth: Wi-Fi Direct is not just an alternative to Bluetooth connectivity ; it delivers a better connection and has greater range than Bluetooth. •Legacy Wi-Fi devices are supported: If you have one Wi-Fi Direct certified device; that device can connect with 802.11n as well as b and g devices. •Wi-Fi Direct has built-in security: WPA2 is bundled into this wireless standard and unlike traditional wireless routers and access points, cannot be disabled. •Applications are a driving factor of this technology: Portable devices will be able to connect to the myriad of applications available without need to connect to a Wi-Fi network. •Wi-Fi Direct is not the same as ad-hoc networking: The most significant difference between traditional ad-hoc wireless networking ( traditional peer-to-peer networking) and Wi-Fi Direct is security. In Windows ad-hoc networks, the highest level of security supported is WEP in mixed client environments (Windows 7 will support WPA2 provided all adapters support it, as well). Wi-Fi Direct, as mentioned, supports WPA2. Another difference, Wi-Fi Direct devices can also simultaneously connect to existing wireless networks. More granular control and better discovery of devices also differentiate Wi-Fi Direct from ad-hoc networking. •Wi-Fi Direct is not meant to replace traditional wireless networks: Wi-Fi Direct devices may not provide the overall range of a wireless router or AP. There's more flexibility with APs and routers, as they can be placed strategically to provide optimized signal strength. Also, there are security considerations with Wi-Fi Direct; there is a good chance that IT departments with corporate wireless networks may have issues with controlling Wi-Fi Direct devices. •There are products already Wi-Fi Direct certified: Wi-Fi Direct certified products include Atheros XSPAN® Dual-band 802.11n PCIe Mini Card (AR928x); Broadcom BCM43224; Intel® Centrino® Advanced-N 6200 internal PCIe half mini card; Ralink MIMObility 802.11n Reference Design ; Realtek RTL8192CE-VA4 HM92C00 PCIe mini card. In addition, Cisco and Netgear are rolling out Wi-Fi direct networking devices.
Lagrangian requires convexity. In this case it means a should be less than 1 . When a equals to w, you have perfect substitute and will have corner solutions. Is this part of your econ homework?
z*8
17 楼
would you be my tutor?
1
【在 d*****g 的大作中提到】 : Lagrangian requires convexity. In this case it means a should be less than 1 : . When a equals to w, you have perfect substitute and will have corner : solutions. Is this part of your econ homework?
d*g
18 楼
I appreciate the offer, but unfortunately I am pretty busy and my time is pretty expensive. I am sure you can find a good enough tutor at a much cheaper price. Of course, (and I mean absolutely no offense by saying this, simply stating a fact), if you are confident enough that you can make me an offer that I can't refuse, feel free to message me. Good luck and thank you again.
【在 z****8 的大作中提到】 : would you be my tutor? : : 1
z*8
19 楼
A perfectly competitive, profit maximizing firm has the production function y = K^1/4+L^1/4 Let p be the price of the output y; v the price of capital K, and w the price of labor L: (a) Determine the firm's input demand, supply, and profit functions. (b) Detemine the degree of homogeneity of the profit function in prices. Does the result surprise you? why or why not?
d*g
20 楼
Set up a lagrangian, derive first order conditions, set the first order conditions to zero and solve. Should be fairly straight forward. Good luck.
z*8
21 楼
十分感谢你的回答。 大哥还有道题,你忙就算了吧,或者随便说一下思路。 A consumer's utility function is U(x; y) = x^a+ y^a where a > 0: (a) Determine limits on a which guarantee that you can appropriately use a Lagrangian to find the consumer's demand functions. In other words, for what (minimal) restrictions on is the second order sufficient condition for the consumer's constrained utility maximization problem satisfied?
【在 d*****g 的大作中提到】 : Set up a lagrangian, derive first order conditions, set the first order : conditions to zero and solve. Should be fairly straight forward. Good luck.
z*8
22 楼
这里面appropriately use Lagrangian什么意思?用Lagrangian需要啥条件在这道题里 面?
d*g
23 楼
Lagrangian requires convexity. In this case it means a should be less than 1 . When a equals to w, you have perfect substitute and will have corner solutions. Is this part of your econ homework?
z*8
24 楼
would you be my tutor?
1
【在 d*****g 的大作中提到】 : Lagrangian requires convexity. In this case it means a should be less than 1 : . When a equals to w, you have perfect substitute and will have corner : solutions. Is this part of your econ homework?
d*g
25 楼
I appreciate the offer, but unfortunately I am pretty busy and my time is pretty expensive. I am sure you can find a good enough tutor at a much cheaper price. Of course, (and I mean absolutely no offense by saying this, simply stating a fact), if you are confident enough that you can make me an offer that I can't refuse, feel free to message me. Good luck and thank you again.
【在 z****8 的大作中提到】 : would you be my tutor? : : 1
z*8
26 楼
T_T
, an you
【在 d*****g 的大作中提到】 : I appreciate the offer, but unfortunately I am pretty busy and my time is : pretty expensive. I am sure you can find a good enough tutor at a much : cheaper price. Of course, (and I mean absolutely no offense by saying this, : simply stating a fact), if you are confident enough that you can make me an : offer that I can't refuse, feel free to message me. Good luck and thank you : again.