已知,f(x-1)=x눀+1,则f(x)=

2024-12-27 10:23:43
推荐回答(3个)
回答1:

,f(x-1)=x²+1,则f(x)=
令 x - 1 = k
x = k+1
,f(k)=x²+1 = ( k+1 )²+1 = k² +2k +1 + 1
= k² +2k + 2

f(x)=x² +2x + 2

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回答2:

答:
f(x-1)=x²+1
=(x-1+1)²+1
=(x-1)²+2(x-1)+2
所以:
f(x)=x²+2x+2

回答3:

f(x-1)=x*x-1+2=(x-1)(x-1+2)+2故f(x)=x(x+2)+2