设集合m={(x|y=根号(1-x^2)},n={y|y=(1/2)^x},则m交n是[0,1]还是[-1,1]呢
问题描述:
设集合m={(x|y=根号(1-x^2)},n={y|y=(1/2)^x},则m交n
是[0,1]还是[-1,1]呢
答
设集合m={(x|y=根号(1-x^2)},n={y|y=(1/2)^x},则m交n
是[0,1]还是[-1,1]呢