4.9

2004-05-23

f_i,j = [(1 + s_j)^j / (1 + s_i)ⁱ]^{1 / (j - i)} - 1
= [(1 + r)^j / (1 + r)ⁱ]^{1 / (j - i)} - 1
= (1 + r)^{(j - i) / (j - i)} - 1
= r

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2004-05-23 create.