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original poster: nttz

求解恒等式证明思路

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hbghlyj posted 2022-5-3 11:06
根据 f’(x)=$(x-c)^2h(x)$, 则 f''(x) = $(x-c)^2h'(x)+2(x-c)h(x)$ ,这个f''(c)不肯定是0啊
nttz 发表于 2022-5-2 03:54
你仔细看一下,是$f$有因式$(x-c)^2$,不是$f'$有因式$(x-c)^2$

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