设f(x-1) =x2,则f(x+1)等于:A. (x-2)2 B. (x+2)2 C. x2-22 D.x2+22
设f(x-1) =x2,则f(x+1)等于:
A. (x-2)2 B. (x+2)2 C. x2-22 D.x2+22
A. (x-2)2 B. (x+2)2 C. x2-22 D.x2+22
参考解析
解析:提示:设x-1=t,则x=t+1,代入函数表达式,得f(t)= (t+1)2,即f(x) = f(x+1)2,从而求得f(x+1)的表达式。
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