已知1<X<3,化简(1)|X-3|分之X-3+|X-1|分之X-1 (2)|2X-1|-|X-2|

2024-11-26 08:50:45
推荐回答(2个)
回答1:

(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

回答2:


(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