n(n+1)(n+2)分之一裂项
请教1/n(n+1)(n+2)如何裂项相加?习题集里是答案是这样子:1/n(n+1)(n+2)=1/2[1/n(n+1)-1/(n+1)(n+2)]...
请教1/n(n+1)(n+2)如何裂项相加?
习题集里是答案是这样子:1/n(n+1)(n+2)=1/2[1/n(n+1)-1/(n+1)(n+2)] 展开
习题集里是答案是这样子:1/n(n+1)(n+2)=1/2[1/n(n+1)-1/(n+1)(n+2)] 展开
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