设集合m={(x|y=根号(1-x^2)},n={y|y=(1/2)^x},则m交n
题目
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
答案
举一反三
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