①函数f(x)=In(1-x),求x≤0的值域.x=0,1-x>=1,即有ln(1-x)>=ln1=0即值域是[0,+无穷）②函数y=根号下log(底数)2log(底数)3(真数)x求定义域.1.真数X>02.log3(x)>0,得到x>13.log2(log3(x))>=0,即log3(x)>=1,x>=3综上所...