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定义域:1-(1/2)^x≥0(1/2)^x≤12^X≥1x≥0下面求值域:0<(1/2)^x≤1-1≤-(1/2)^x<00≤1-(1/2)^x<10≤√[1-(1/2)^x]<1所以y=√[1-(1/2)^x]∈[0,1)答案:定义域:x≥0值域:y∈[0,1)...