设全集U={- 1/3,5,-3}集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB设全集U={- 1/3,5,-3},集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB
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![设全集U={- 1/3,5,-3}集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB设全集U={- 1/3,5,-3},集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB](/uploads/image/z/3942968-32-8.jpg?t=%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%EF%BD%9B-+1%2F3%2C5%2C-3%EF%BD%9D%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%E4%B8%A83X%E6%96%B9%2Bpx-5%EF%BD%9D%E4%B8%8E%E9%9B%86B%3D%EF%BD%9Bx%E4%B8%A83x%E6%96%B9%2B10x%2Bq%3D0%EF%BD%9D%2C%E4%B8%94A%E2%88%A9B%3D%EF%BD%9B-+1%2F3%EF%BD%9D%E6%B1%82CvA%2CCvB%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%EF%BD%9B-+1%2F3%2C5%2C-3%EF%BD%9D%2C%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%E4%B8%A83X%E6%96%B9%2Bpx-5%EF%BD%9D%E4%B8%8E%E9%9B%86B%3D%EF%BD%9Bx%E4%B8%A83x%E6%96%B9%2B10x%2Bq%3D0%EF%BD%9D%2C%E4%B8%94A%E2%88%A9B%3D%EF%BD%9B-+1%2F3%EF%BD%9D%E6%B1%82CvA%2CCvB)
设全集U={- 1/3,5,-3}集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB设全集U={- 1/3,5,-3},集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB
设全集U={- 1/3,5,-3}集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB
设全集U={- 1/3,5,-3},集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB
设全集U={- 1/3,5,-3}集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB设全集U={- 1/3,5,-3},集合A={x丨3X方+px-5}与集B={x丨3x方+10x+q=0},且A∩B={- 1/3}求CvA,CvB
在集合A和B中,带入X=-1/3,求得P=-14 Q=3,带入原方程,则A={-1/3,5} B={-1/3,-3} .则答案分别为{-3}{5}
给你点思路,既然且A∩B={- 1/3},那就是说A集合和B集合中都有- 1/3这个元素,那么,分别带入集合A,B的方程,可以解出来p,q,这时,分别解出来AB两集合中的方程,就可以轻轻松松求出来所包括的元素了,下面的就不是问题了!
这还不简郸,真接抄答案撒·!
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