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f(x-1)=x^2+1,则f(x)=
人气:301 ℃ 时间:2020-06-18 08:06:44
解答
f(x-1)=x^2+1
令x-1=t,x=t+1
f(t)=(t+1)^2+1
=t^2+2t+2
f(x)=x^2+2x+2
f(x-1)=x^2+1
=(x-1)^2+2(x-1)+2
f(x)=x^2+2x+2
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