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¹«Çѱ޼öÀÇ ÇÕ (-1 < r < 1), Sum of infinite series

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ÃÊÇ×ÀÌ a, °øºñ°¡ r (-1 < r < 1) ÀÎ µîºñ¼ö¿­ÀÇ ÇÕÀº ´ÙÀ½°ú °°´Ù.

Sn = a*(1-r^n)/(1-r)

n¡æ¡Ä À̸é, r^n¡æ0 °¡ µÇ¹Ç·Î, ¹«Çѵîºñ±Þ¼öÀÇ ÇÕ S ´Â,

S = a/(1-r) ÀÌ µÈ´Ù.



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S = a/(1-r)
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