急 (19 17:40:30)已知X,Y满足Y〈√X-1 +√1-X  +{1/2},化简{|1-Y|/Y-1}

问题描述:

急 (19 17:40:30)
已知X,Y满足Y〈√X-1 +√1-X  +{1/2},化简{|1-Y|/Y-1}

Y〈√X-1 +√1-X +{1/2}
√X-1 √1-X 同时存在
x=1
y1/2>0
|1-y|=1-y
原式=(1-y)/(y-1)=-1