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设奇函数f(x)在[-1,1]上是增函数,且f(-1)=-1,当a∈[-1,1]...
设奇函数f(x)在[-1,1]上是增函数,且f(-1)=-1,当a∈[-1,1]时,f(x)≤t2-2at+1对所有的x∈[-1,1]恒成立,则t的取值范围是( )
A.t≥2或t≤-2或t=0
B.t≥2或t≤2
C.t>2或t<-2或t=0
D.-2≤t≤2
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