当1<x<3时,化简丨x-3丨+丨x-1丨/2

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当1<x<3时,化简丨x-3丨+丨x-1丨/2当1<x<3时,化简丨x-3丨+丨x-1丨/2当1<x<3时,化简丨x-3丨+丨x-1丨/21<x<3x-3<0x-1>0(丨x-3丨+丨x-1丨)/2=

当1<x<3时,化简丨x-3丨+丨x-1丨/2
当1<x<3时,化简丨x-3丨+丨x-1丨/2

当1<x<3时,化简丨x-3丨+丨x-1丨/2
1<x<3
x-3<0
x-1>0
(丨x-3丨+丨x-1丨)/2
=(3 - x + x -1)/2
= 1

丨x-3丨+丨x-1丨/2=3-x+x-1=2

=3-X+(X-1)/2=(5-X)/2

-(x-3)+(x-1)/2=-x+3+x-1/2=1

原式=(3-x)+(x-1)/2
=3-x+x/2-1/2
=-x/2+5/2