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k=0ºÎÅʹϱñ   ¼ö¿­ÀÌ 1 - 1/3! + 1/5! -1/7! + 1/9! .....

                        k=     0     1        2      3       4      .....

0.0005¸é 

 

1/3! = 1/6 = 0.16666

1/5! = 1/120 = 0.00833

1/7! = 1/5040 = 0.000198

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