本文介绍了哈希克尔方程求解实数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 29岁程序员,3月因学历无情被辞! 我刚刚开始玩GHCi。我发现列表生成器基本上可以解决给定集合中的方程: Prelude> [x | x [2] (如预期的那样,只找到一个根) 现在,为什么我不能用解决方案求解方程式,因为解决方案是包含在指定范围内? [x | x 编辑:对不起,我的意思当然是 0.1 。 / p> 解决方案正如其他人所提到的,这不是解决方程式的有效方法,但可以用比率来完成。 Prelude> :m + Data.Ratio Prelude Data.Ratio> [x | x [1%2] $ b 阅读 x%y 为 x除以y 。 I've just started playing with GHCi. I see that list generators basically solve an equation within a given set:Prelude> [x | x <- [1..20], x^2 == 4][2](finds only one root, as expected)Now, why can't I solve equations with results in ℝ, given that the solution is included in the specified range?[x | x <- [0.1,0.2..2.0], x*4 == 2]How can I solve such equations within real numbers set?Edit: Sorry, I meant 0.1, of course. 解决方案 As others have mentioned, this is not an efficient way to solve equations, but it can be done with ratios.Prelude> :m +Data.RatioPrelude Data.Ratio> [x|x<-[1%10, 2%10..2], x*4 == 2][1 % 2]Read x % y as x divided by y. 这篇关于哈希克尔方程求解实数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云! 08-21 12:10