先假設有此方程有兩根,然後用Rolle's thm 求出矛盾，此時可知實屬解不超過一個
然後用Intermediate Value thm. 找出某一區間內必有f(x) = 0 即可得證
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先假設有此方程有兩根,然後用Rolle's thm 求出矛盾，此時可知實屬解不超過一個
然後用Intermediate Value thm. 找出某一區間內必有f(x) = 0 即可得證
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are also looking at these questions 😉
