根号(m^2-4m+4/m^2-4m+3)×(根号3-m)/m-2+1/根号1-m
=根号(m-2)^2/(m-1)(m-3)×(根号3-m)/m-2+1/根号1-m
则有(m-1)(m-3)>0 3-m>0 1-m>0
所以m