∀ n ∈ *N*: ∑ ~i=1~ ^n^ i = n(n+1) / 2 CaCO ~3~ → CaO + CO ~2~. to yield. ∀ n ∈ N: ∑ i=1 n i = n(n+1) / 2. CaCO 3 → CaO + CO 2.
確定！ 回上一頁
