分段函数f(x)=[2^(1-x)(x1)] 则满足f(x)

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分段函数f(x)=[2^(1-x)(x1)]则满足f(x)分段函数f(x)=[2^(1-x)(x1)]则满足f(x)分段函数f(x)=[2^(1-x)(x1)]则满足f(x)x>=0先看x=0再看x>

分段函数f(x)=[2^(1-x)(x1)] 则满足f(x)
分段函数f(x)=[2^(1-x)(x1)] 则满足f(x)

分段函数f(x)=[2^(1-x)(x1)] 则满足f(x)

x>=0 先看x<=1,2^(1-x)<=2,所以1-X<=1,x>=0再看x>1,1-log2x<=2,log2x>=-1,x>1时显然成立,综上x>=0