請教一題
6.試求\(\displaystyle \frac{\displaystyle \frac{1}{4^{109}}}{\frac{1}{4^{109}} + 2} + \frac{\displaystyle \frac{2}{4^{109}}}{\frac{2}{4^{109}} + 2} + \frac{\displaystyle\frac{3}{4^{109}}}{\frac{3}{4^{109}} + 2} + \dots + \frac{\displaystyle\frac{108}{4^{109}}}{\frac{108}{4^{109}} + 2}\)之值為何？114.5.14補充
類似問題[url]https://math.pro/db/viewthread.php?tid=1144&page=1#pid3596[/url] [quote]原帖由 [i]chihming[/i] 於 2021-6-2 19:17 發表 [url=https://math.pro/db/redirect.php?goto=findpost&pid=23012&ptid=3521][img]https://math.pro/db/images/common/back.gif[/img][/url]
謝謝大家 [/quote]
化石級的考古題了
用頭尾相加=1
頭2+尾2=1
頭3+尾3=1
..............
去做
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