某地区家庭人均鸡肉年消费量http://img1.ph.126.net/g271QWwZf0i7B2Y-6GOu4g==/6608802655236525139.png与家庭月均收入http://img0.ph.126.net/lEiAQJQKvY14Qo2qj0E1Aw==/1072982611321422975.png,鸡肉价格http://img1.ph.126.net/K2wsOtCCYsxj5ItH--wYqw==/2128232298926104552.png(元/千克)。求出该地区关于家庭鸡肉消费需求的如下模型:http://img1.ph.126.net/4vtPZMT_bExTl6GTMZem5A==/2972094279188350603.png,则有
举一反三
- 某地区家庭人均鸡肉年消费量[img=11x19]17de5fbd36f4683.png[/img]与家庭月均收入[img=15x19]17de65a75a74a4d.png[/img],鸡肉价格[img=18x22]17de8248bcc9b6c.png[/img](元/千克)。求出该地区关于家庭鸡肉消费需求的如下模型:[img=242x23]17de876cc6755cd.png[/img],则有 未知类型:{'options': ['', '', '正负都有可能', '以上说法都不对'], 'type': 102}
- <img src="http://img1.ph.126.net/JMg9tqo6gf8sEot0y9NSUg==/6619559177490984445.gif" />? 0|<img src="http://img1.ph.126.net/uSXYTJKY1--cmM46BmL7Pg==/1177972777551495010.gif" />|<img src="http://img0.ph.126.net/-vDBDVZEQJqbFun7PrX7vg==/2887370311115280318.gif" />|<img src="http://img2.ph.126.net/NK1mnxUZa_ibCGqQvHOaoQ==/2435884448470832003.gif" />
- <img src="http://img0.ph.126.net/qTvKCnpBxCeCijb88CKSNQ==/6632485036189822509.png" />? <img src="http://img1.ph.126.net/Y7wKEaGGeNBuSwc9GbYuyg==/6608251799912132017.png" />|<img src="http://img1.ph.126.net/7acB1UIp2O_CZmSqpGA0yQ==/6597158827100659273.png" />|<img src="http://img1.ph.126.net/-Fgn4AoNQzVftUnH_lPeHg==/6630151872514107031.png" />|<img src="http://img1.ph.126.net/knoGV4UX9L4YUquOIP-Jxw==/1409626683467679913.png" />
- <img src="http://img0.ph.126.net/q6tqn77YyTg_j7CabeHYJw==/3109735542717391842.jpg" />? <img src="http://img1.ph.126.net/QO3FWMGgxAVtN31l0ulKFw==/6619487709235793443.jpg" />|<img src="http://img2.ph.126.net/-x9WCwFJKaqmfOJLJjH0_Q==/6630623563001319953.jpg" />|<img src="http://img1.ph.126.net/5eiGUQZYA2gEX9q4m57n4Q==/6608642126539334311.jpg" />|<img src="http://img1.ph.126.net/YixVkAU6iexb7xitW-q8Lg==/6630125484233816848.jpg" />
- 中国大学MOOC: 已知4阶行列式的值为92, 它的第2行元素依次为1, 0, http://img1.ph.126.net/VNFztsVinaRqNakA9kMAgA==/3096787693788755425.png, 2, 且第2行元素的余子式分别为1, 3, http://img0.ph.126.net/eL8MWiNlujHx04qlduEsCw==/3838192782527135538.png, 2, 则http://img1.ph.126.net/91UQhB5nxxSdGH8DVOIrOg==/6630104593513509133.png( ).