能解出来的才是真大神！

in cn •  7 years ago 

v2-09b42c0984429923fc5502d5bf1bf3ee_1200x500.jpg

刚看到 @justyy 发了一道数学题，蛮有意思的。
决定也出一道题，考考大神们！（其实今天没文章发了，灌一下水)
这道题可是极其变态的题目，能解出来的是真大神！@coder-bts 敢挑战一下吗？

cn cn-reader busy math puzzel
7 years ago by

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    • [-]
      ·  7 years ago 

    x/(y+z)+y/(x+z)+z/(x+y)=4?

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      [-]
        ·  7 years ago 

      对的

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        [-]
          ·  7 years ago 

        最好找个matlab算，不然还真算不出来

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          [-]
            ·  7 years ago 

          我知道答案 (笑笑)

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            [-]
              ·  7 years ago 

            Debbie才是真大神！

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              [-]
                ·  7 years ago 

              我只是有玩過....

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                [-]
                  ·  7 years ago (edited)

                我写了个 java 程序把每个数遍历到 1000，试了 1000*1000*1000 种可能还没找到

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                  [-]
                    ·  7 years ago 

                  这个java解决不了的，换matlab吧

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                    [-]
                      ·  7 years ago 

                    matlab 大法好

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                      [-]
                        ·  7 years ago (edited)

                      這要計算，應要差不多半小時，才能計出來。
                      每一步也怕會寫錯。
                      而不是怕計錯。
                      要找一張大紙來計。
                      IMG_20180419_051948.jpg

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                        [-]
                          ·  7 years ago (edited)

                        谷歌一搜就可以呀

                        http://www.wolframalpha.com/input/?i=(702%2F(-390%2B858))%2B(-390%2F(702%2B858))%2B(858%2F(702%2B-390)

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                          [-]
                            ·  7 years ago 

                          不完全正常，要的是正整数解image.png

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                            [-]
                              ·  7 years ago 

                            算了五分钟，一点头绪没有，放弃！

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                              [-]
                                ·  7 years ago 

                              放弃是对的，这题不是人解的

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                                [-]
                                  ·  7 years ago 

                                我觉得这题高考那会应该做过的。
                                现在全忘了。

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                                  [-]
                                    ·  7 years ago 

                                  这题绝对不会出，需要专业程序算的

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                                    [-]
                                      ·  7 years ago 

                                    好吧。十几年前的事了，可能没出过，我也记不清了

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                                      [-]
                                        ·  7 years ago 

                                      非常可怖，要到九次方及 九次開方。
                                      一寫錯，就會計算錯誤。

                                      不用電腦程序，很難準確。

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                                        [-]
                                          ·  7 years ago 

                                        确实恐怖😱
                                        我放弃了！

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                                          [-]
                                            ·  7 years ago 

                                          高中高级数学不及格的我 - 默默点赞飘过～

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