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最簡單方法,複製法因為是奇函數 所以f(1)=a+2 f(-1)=a-4所以4-a=a+2所以a=1 具體要算,就利用定義f(x)=-f(-x) 若函數是f(x)=a+2/(2^x-1)就是我上面的答案 若函數是a+2/2^x-1 則f(0)=a+2-1=0所以a=-1
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