Mathematics
高中
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為什麼第三題不能這樣算

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✨ Best Answer ✨

舉個例子
Σ上面不是10是2的話
所求是1/(1+1) + 1/(4+2) = 1/2 + 1/6 = 2/3
而1/[(1+4)+(1+2)] = 1/8
兩者不相等

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