HMMT 二月 2000 · CALC 赛 · 第 5 题
HMMT February 2000 — CALC Round — Problem 5
题目详情
英文原题
- F or 1 < x < 1, let f ( x ) = . Find a losed form expression (a losed formi =1
expression is one not in v olving summation) for f .ip
解析
英文解析
- f ( x ) = . So, f ( x ) = x = . Th us, f ( x ) = ln(1 x ) .
i =1 i =0
i 1 x