已知f（x)的值域為［３／８，４／９］則g( x )=f(x)+根號１－２f(x)的值域

熱心網友

g( x )=f(x)+根號１－２f(x)所以１－２f(x)=0,所以f(x)<=1/2因為f（x)的值域為［３／８，４／９］，所以3/8<=f(x)<=1/2,代入求得1/2<=g(x)<=7/8