如何解题

字体 -

一年一度的COMC又将到来,想必很多学生们早已准备就绪。我想在此给学生们提个醒,说说如何解题。

什么是竞赛呢,那就是某几个人收集了几道难题,约定个时间,让全天下所有的学生都去试试他们的运气。运气好的话,给你个奖状;运气不好的话,你交的钱就进了那几个人的口袋,打了个水漂。

这人间的事说来也真是奇怪,为什么要花钱去解别人的难题呢?他们美其名曰选拔。一切前程、仕途,都取决于这些考试的结果。考试就是做题,考你解题的能力:脑袋容量的大小、急转弯的灵活程度、计算的快慢等等。很多人都写了《如何解题》的书,尽管他们本身并不是解题的高手;最有名的要算波利亚的书,他把解题当成一种艺术。

解题的过程大致是这样的:

读题。它让你干什么?给了你什么条件?涉及到什么内容?

回想。把你脑袋里存储的相关知识调出来;如果是一片空白,那就要么放弃,要么看看能否机灵的想出点相关的东西。要指望有知识突然凭空而生,概率很小。

串联。根据要解决的问题,进行倒推:用你知道的各种方法,把相关内容串联起来,直到已知条件为此。

挣扎。一个方法行不通了,那就换一个方法试试;如果根本就没有别的方法,那就从已知条件出发,试着推出点与目标相关的东西好歹也能得点分。

快而准。考试都有时间限制,计算速度必须要快但这只能是平时训练出来的能力,不可能一蹴而至。快了又会出错,这就得检查;问题是根本意识不到自己做错了,那就只能凭运气了:一般来说,太复杂的答案总是错得。

 

现在我可以坐在这里,对人指手画脚、说三道四,解题也没有时间限制,可当年也是按上述要求做的,而现在所解的问题,都是数学结构本身的问题,一辈子也就解出一两个而已。

分享博文至:

    13 条评论

  1. 1. tinyurl.com - 2019年11月21日 03:10

    This is my first time go to see at here and i am truly impressed to read everthing at one place.

  2. 2. ps4 games - 2019年11月28日 02:25

    Hello there, I found your blog by way of Google even as looking for a similar matter, your website came up, it looks great. I have bookmarked it in my google bookmarks.

    Hello there, just become aware of your blog via Google, and found that it’s truly informative. I am gonna watch out for brussels. I will appreciate in the event you continue this in future. Numerous other people might be benefited out of your writing. Cheers!

  3. 3. ps4 games - 2019年11月29日 16:18

    Howdy! I could have sworn I’ve been to this blog before but after going through some of the articles I realized it’s new to me. Regardless, I’m definitely pleased I found it and I’ll be bookmarking it and checking back often!

  4. 4. quest bars cheap - 2019年12月1日 15:24

    Currently it looks like Wordpress is the best blogging platform available right now. (from what I’ve read) Is that what you’re using on your blog?

  5. 5. quest bars cheap - 2019年12月8日 19:04

    I like the valuable information you provide in your articles.

    I will bookmark your blog and check again here regularly.

    I’m quite certain I will learn lots of new stuff right here!

    Good luck for the next!

  6. 6. quest bars cheap - 2019年12月9日 19:03

    Hi, everything is going fine here and ofcourse every one is sharing information, that’s truly fine, keep up writing.

  7. 7. ps4 games - 2019年12月13日 02:33

    Hi! Do you use Twitter? I’d like to follow you if that would be okay. I’m undoubtedly enjoying your blog and look forward to new updates.

  8. 8. ps4 games - 2019年12月13日 21:42

    Do you have any video of that? I’d love to find out more details.

  9. 9. coconut oil - 2019年12月20日 18:02

    Hey there I am so glad I found your weblog, I really found you by mistake, while I was looking on Digg for something else, Regardless I am here now and would just like to say kudos for a incredible post and a all round enjoyable blog (I also love the theme/design), I don’t have time to browse it all at the minute but I have book-marked it and also added in your RSS feeds, so when I have time I will be back to read a great deal more, Please do keep up the great work.

  10. 10. sling tv - 2020年1月2日 19:25

    Way cool! Some extremely valid points! I appreciate you penning this post and also the rest of the site is very good.

发表评论