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

问题描述:

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}