• 2022-06-04
    设某企业生产函数为[tex=6.071x1.286]30oQJplgoWeZ/3Bbix0Ti6Wvq2JV3oYO+rwMo9+vSmM=[/tex],且已知[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]的价格[tex=2.857x1.286]fnt8HO56VrK/8Ff+3jYPSQ==[/tex]元,[tex=0.929x1.286]nrJzN9qRndstwtgYfof7gw==[/tex]的价格[tex=2.214x1.286]1gql1ftigCiEvi3uFnbeLg==[/tex]元,求:(1)当产量[tex=3.571x1.286]ly6BDF49xEyVQWMPhgP3HQ==[/tex]个单位时,[tex=0.929x1.286]nrJzN9qRndstwtgYfof7gw==[/tex]、[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]最优组合的量应为多少?(2)当成本[tex=4.0x1.286]1yFouxlcw0lIjNjpP3jbZQ==[/tex]时,企业实现最大产量时的[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]、[tex=0.929x1.286]nrJzN9qRndstwtgYfof7gw==[/tex]的均衡值分别为多少?
  • 解:[tex=6.071x1.286]30oQJplgoWeZ/3Bbix0Ti6Wvq2JV3oYO+rwMo9+vSmM=[/tex],[tex=10.286x1.286]n7tL2rhzdwQCq1C6c9xT1OpzTKZFrgVTZfOhM8ai88/Q1iwioyyrFb0MwF9TN7XN[/tex],[tex=10.5x1.286]Uej71KJW+mXKYhIShY2XtwOGyHQt3BqTg6zn/Z997WnwjJ25yuZ6md8qdsnn2m1B[/tex]。(1)当[tex=3.571x1.286]ly6BDF49xEyVQWMPhgP3HQ==[/tex]时,[tex=8.714x1.286]YWgGpK67c8s8rw4WtEJ54/Y72I/mKdHJTcP5ecGgKBhLsOo9JZjNh3GSjcRpywNO[/tex],[tex=4.429x2.786]6/14nsgfUOhUgJsSz1C97WL/d5i+7TveJhRAmuurXpyTw2lkkS3LBfPSDUZSEJYwi9zahB8AHbWWMWSC4P2cLEJu174+J9W1o6SZmDAbqk8=[/tex],即:[tex=9.429x2.643]tygC7SQipKpD0BRRL53HXORFt3DZyXllJ/M7rzG9tmmoS3RsM32X9gJ65zjs4ijE0XVQnZ8JDy9zwsGC5KEpWNTemUhmlRcJCDov15ez9XfYBEsmzwjWo+2bYBjflIshK9InOg97WOZdF7fH6Lh5pg==[/tex],联立[tex=2.0x1.286]mpeE0q79K6tHCiYtvwq5eg==[/tex]得:[tex=3.429x1.286]sSM2CBiXZZVjKSW8zBczSg==[/tex],[tex=3.714x1.286]AQshwnbw/nGeeJB+2nXILA==[/tex]。(2)当[tex=4.0x1.286]1yFouxlcw0lIjNjpP3jbZQ==[/tex]时,[tex=8.429x1.286]Ed+wEHvlPcA/jD87QDGmSaX0QpKD8ynOmFx8MXfoK8o=[/tex],[tex=4.429x2.786]6/14nsgfUOhUgJsSz1C97WL/d5i+7TveJhRAmuurXpyTw2lkkS3LBfPSDUZSEJYwi9zahB8AHbWWMWSC4P2cLEJu174+J9W1o6SZmDAbqk8=[/tex],即:[tex=9.429x2.643]tygC7SQipKpD0BRRL53HXORFt3DZyXllJ/M7rzG9tmmoS3RsM32X9gJ65zjs4ijE0XVQnZ8JDy9zwsGC5KEpWNTemUhmlRcJCDov15ez9XfYBEsmzwjWo+2bYBjflIshK9InOg97WOZdF7fH6Lh5pg==[/tex],联立[tex=2.0x1.286]mpeE0q79K6tHCiYtvwq5eg==[/tex]得:[tex=3.929x1.286]BUk9rsCY/poiHCRBZmrxmQ==[/tex],[tex=4.143x1.286]zjcYIj6VAhKotNVUKKQfJA==[/tex]。

    举一反三

    内容

    • 0

      计算[tex=5.643x2.214]VRGxBAWkDwa0+cPFMVu6wTYV1lSKBPhn+I5RZIQs7UQ=[/tex],其中[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]为直线[tex=2.071x1.286]FAqTcYA8CahKhM7FlJ8how==[/tex][tex=2.857x1.286]EVugoY37whNmyGP1iZUqgQ==[/tex],[tex=2.929x1.286]XmXKtnP1fnjppiLalV5SSw==[/tex] .

    • 1

      (6分)特色医院接待患者的比例[tex=0.929x1.286]nrJzN9qRndstwtgYfof7gw==[/tex]型50%,[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex] 型30%,  [tex=1.071x1.286]/vZEgalrrOYkhzS9SMg+fg==[/tex] 型 20%,对应的治愈率为0.7,0.8,0.9—患者已治愈,问他属于L型的概率为多少?                      [br][/br]

    • 2

      证明: 若 [tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex] 为平面上封闭曲线, [tex=0.357x1.286]O1PzqaL1+AfC/NERqj1Zew==[/tex] 为任意方向向量, 则[tex=7.214x2.643]sylT6Y9dWdZ/DxvghRXRapmtORH1nRe9vGqo+X7mpwGU8At1xWYPt7vb0aYeV+Xo[/tex]其中 [tex=0.643x1.286]ZsZs11iKEvfmzDIurZth8g==[/tex] 为曲线 [tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex] 的外法线方向.

    • 3

      设系统[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]由两个相互独立的子系统[tex=1.071x1.286]znnbcDroem+0Djr3hBPwXg==[/tex]、[tex=1.071x1.286]6yqW8fcpVF9OkaZv4Gb/5A==[/tex]串联而成,且[tex=1.071x1.286]znnbcDroem+0Djr3hBPwXg==[/tex],[tex=1.071x1.286]6yqW8fcpVF9OkaZv4Gb/5A==[/tex]的寿命分别服从参数为[tex=0.643x1.286]vYiGJJ9TAtvnQmM1PsOB8g==[/tex],[tex=0.643x1.286]mI2l8V/Tmuo7C2MtPPAzQQ==[/tex][tex=3.214x1.286]ggld76BhnG5o6oBEIgqI3cZ84VqdyMDZIMSQdGDhTCs=[/tex]的指数分布。求系统[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]的寿命[tex=0.786x1.286]YmC97Clv6J6k2IyNV61eAw==[/tex]的密度函数。

    • 4

      设系统[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]由两个相互独立的子系统[tex=1.071x1.286]znnbcDroem+0Djr3hBPwXg==[/tex],[tex=1.071x1.286]6yqW8fcpVF9OkaZv4Gb/5A==[/tex]并联而成,且[tex=1.071x1.286]znnbcDroem+0Djr3hBPwXg==[/tex],[tex=1.071x1.286]6yqW8fcpVF9OkaZv4Gb/5A==[/tex]的寿命分别服从参数为[tex=0.643x1.286]vYiGJJ9TAtvnQmM1PsOB8g==[/tex],[tex=0.643x1.286]mI2l8V/Tmuo7C2MtPPAzQQ==[/tex][tex=3.214x1.286]ggld76BhnG5o6oBEIgqI3cZ84VqdyMDZIMSQdGDhTCs=[/tex]的指数分布。求系统[tex=0.714x1.286]LA74ioWWkXdGbHCtFk/Sog==[/tex]的寿命[tex=0.786x1.286]YmC97Clv6J6k2IyNV61eAw==[/tex]的密度函数。