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ejsoon

https://bbs.emath.ac.cn/?14014

nyy 2023-10-7 09:23: \[a_{0}+\frac{1}{a_{1}+\frac{1}{a_{2}+\frac{1}{a_{3}+\frac{1}{a_{4}+\frac{1}{a_{5}+\frac{1}{a_{6}+\frac{1}{a_{7}+\frac{1}{a_{8}+\frac{1}{a_{9}+\frac{1}{a_{10}+\frac{1}{a_{11}+\frac{1}{a_{12}+\frac{1}{a_{13}+\frac{1}{a_{14}+\frac{1}{a_{15}+\frac{1}{a_{16}+\frac{1}{a_{17}+\frac{1}{a_{18}+\frac{1}{a_{19}+\frac{1}{a_{20}+\frac{1}{a_{21}+\frac{1}{a_{22}+\frac{1}{a_{23}+\frac{1}{a_{24}+\frac{1}{a_{25}+\frac{1}{a_{26}+\frac{1}{a_{27}+\frac{1}{a_{28}+\frac{1}{a_{29}+\frac{1}{a_{30}+\frac{1}{a_{31}+\frac{1}{a_{32}+\frac{1}{a_{33}+\frac{1}{a_{34}+\frac{1}{a_{35}+\frac{1}{a_{36}+\frac{1}{a_{37}+\frac{1}{a_{38}+\frac{1}{a_{39}+\frac{1}{a_{40}+\frac{1}{a_{41}+\frac{1}{a_{42}+\frac{1}{a_{43}+\frac{1}{a_{44}+\frac{1}{a_{45}+\frac{1}{a_{46}+\frac{1}{a_{47}+\frac{1}{a_{48}+\frac{1}{a_{49}+\frac{1}{a_{50}+\frac{1}{a_{51}+\frac{1}{a_{52}+\frac{1}{a_{53}+\frac{1}{a_{54}+\frac{1}{a_{55}+\frac{1}{a_{56}+\frac{1}{a_{57}+\frac{1}{a_{58}+\frac{1}{a_{59}+\frac{1}{a_{60}+\frac{1}{a_{61}+\frac{1}{a_{62}+\frac{1}{a_{63}+\frac{1}{a_{64}+\frac{1}{a_{65}+\frac{1}{a_{66}+\frac{1}{a_{67}+\frac{1}{a_{68}+\frac{1}{a_{69}+\frac{1}{a_{70}+\frac{1}{a_{71}+\frac{1}{a_{72}+\frac{1}{a_{73}+\frac{1}{a_{74}+\frac{1}{a_{75}+\frac{1}{a_{76}+\frac{1}{a_{77}+\frac{1}{a_{78}+\frac{1}{a_{79}+\frac{1}{a_{80}+\frac{1}{a_{81}+\frac{1}{a_{82}+\frac{1}{a_{83}+\frac{1}{a_{84}+\frac{1}{a_{85}+\frac{1}{a_{86}+\frac{1}{a_{87}+\frac{1}{a_{88}+\frac{1}{a_{89}+\frac{1}{a_{90}+\frac{1}{a_{91}+\frac{1}{a_{92}+\frac{1}{a_{93}+\frac{1}{a_{94}+\frac{1}{a_{95}+\frac{1}{a_{96}+\frac{1}{a_{97}+\frac{1}{a_{98}+\frac{1}{a_{99}+\frac{1}{a_{100}+\frac{1}{a_{101}+\frac{1}{a_{102}+\frac{1}{a_{103}+\frac{1}{a_{104}+\frac{1}{a_{105}+\frac{1}{a_{106}+\frac{1}{a_{107}+\frac{1}{a_{108}+\frac{1}{a_{109}+\frac{1}{a_{110}+\frac{1}{a_{111}+\frac{1}{a_{112}+\frac{1}{a_{113}+\frac{1}{a_{114}+\frac{1}{a_{115}+\frac{1}{a_{116}+\frac{1}{a_{117}+\frac{1}{a_{118}+\frac{1}{a_{119}+\frac{1}{a_{120}+\frac{1}{a_{121}+\frac{1}{a_{122}+\frac{1}{a_{123}+\frac{1}{a_{124}+\frac{1}{a_{125}+\frac{1}{a_{126}+\frac{1}{a_{127}+\frac{1}{a_{128}+\frac{1}{a_{129}+\frac{1}{a_{130}+\frac{1}{a_{131}+\frac{1}{a_{132}+\frac{1}{a_{133}+\frac{1}{a_{134}+\frac{1}{a_{135}+\frac{1}{a_{136}+\frac{1}{a_{137}+\frac{1}{a_{138}+\frac{1}{a_{139}+\frac{1}{a_{140}+\frac{1}{a_{141}+\frac{1}{a_{142}+\frac{1}{a_{143}+\frac{1}{a_{144}+\frac{1}{a_{145}+\frac{1}{a_{146}+\frac{1}{a_{147}+\frac{1}{a_{148}+\frac{1}{a_{149}+\frac{1}{a_{150}+\frac{1}{a_{151}+\frac{1}{a_{152}+\frac{1}{a_{153}+\frac{1}{a_{154}+\frac{1}{a_{155}+\frac{1}{a_{156}+\frac{1}{a_{157}+\frac{1}{a_{158}+\frac{1}{a_{159}+\frac{1}{a_{160}+\frac{1}{a_{161}+\frac{1}{a_{162}+\frac{1}{a_{163}+\frac{1}{a_{164}+\frac{1}{a_{165}+\frac{1}{a_{166}+\frac{1}{a_{167}+\frac{1}{a_{168}+\frac{1}{a_{169}+\frac{1}{a_{170}+\frac{1}{a_{171}+\frac{1}{a_{172}+\frac{1}{a_{173}+\frac{1}{a_{174}+\frac{1}{a_{175}+\frac{1}{a_{176}+\frac{1}{a_{177}+\frac{1}{a_{178}+\frac{1}{a_{179}+\frac{1}{a_{180}+\frac{1}{a_{181}+\frac{1}{a_{182}+\frac{1}{a_{183}+\frac{1}{a_{184}+\frac{1}{a_{185}+\frac{1}{a_{186}+\frac{1}{a_{187}+\frac{1}{a_{188}+\frac{1}{a_{189}+\frac{1}{a_{190}+\frac{1}{a_{191}+\frac{1}{a_{192}+\frac{1}{a_{193}+\frac{1}{a_{194}+\frac{1}{a_{195}+\frac{1}{a_{196}+\frac{1}{a_{197}+\frac{1}{a_{198}+\frac{1}{a_{199}+\frac{1}{a_{200}+\frac{1}{a_{201}+\frac{1}{a_{202}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}\]

数论爱好者 2021-9-11 14:09: 8120是4位数,从1到8120的所有数全部按4位数算:8120*4=32480位,但它有1位数,2位数,3位数,存在其中,所以把一位数变四位数,添上去的数必须减去,才是真实的,以此类推

数论爱好者 2021-9-11 14:03: 三位数在前面添一个0,比如912变成0912,这样可以统一按4位数算,然后把添上数减掉.
数学故事中,分牛问题,借来一只牛,把问题解决好后,又把那只牛牵走,起个过渡作用,把问题大大简化,简单易算

数论爱好者 2021-9-5 20:37: 你怎么用繁体字?哪里人呢?注册比我晚,水平比我高.

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