Початок 2 3 3 4 𝑆= + + 4 5 10 +··· + 11 S=0 d,𝑎1 , 𝑎𝑛 , 𝑛 2 10 3 11 𝑎1 = , 𝑎𝑛 = ні , n=10 так 𝑑= 𝑎𝑛 −𝑎1 𝑛−1 2𝑎1 +𝑑(𝑛−1) 𝑆𝑛 = 2 n 𝑆𝑛 > 0 Кінець ·
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