1,f(1/2-2a)<-f(1-a)=f(a-1),f(x)在(-1,1)上单调递增,∴-1<1/2-2a2,要求|2a-1|<|3a+2|,∴(2a-1)²<(3a+2)²,∴(3a+2+2a-1)(3a+2-2a+1)>0,即(5a+1)(a+3)>0,∴a<-3,或a>-1/5
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