(1)原式=(x-3)/-(x-3)+(x-1)/(x-1)=0(因为在1(2)当1 当2<=x<3时,原式=2x-1-(x-2)=x+1
解(1)|X-3|分之X-3+|X-1|分之X-1 =(x-3)/(3-x)+(x-1)/(x-1)=-1+1=0 (2)当1<x≤2时,|2X-1|-|X-2|=(2x-1)-(2-x)=3x-3当2<x<3时,|2X-1|-|X-2|=(2x-1)-(x-2)=x+1