将函数f(x)=如图,

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将函数f(x)=如图,
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将函数f(x)=如图,
将函数f(x)=如图,

将函数f(x)=如图,
f(x) = 1/x = 1/[-2+(x+2)] = (-1/2){1/[1-(x+2)/2} [ 将 (x+2)/2 当作一个u ]
= (-1/2){1+(x+2)/2+[(x+2)/2]^2+[(x+2)/2]^3+.+[(x+2)/2]^n+.}
= (-1/2)∑[(x+2)/2]^n
= -∑ (x+2)^n/[2^(n+1)]