josdejong/mathjs

Rationalize giving error on 1/(x^-2)

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#1,724 创建于 2020年1月27日

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 (7 评论) (0 反应) (0 负责人)JavaScript (13,832 star) (1,298 fork)batch import
bughelp wanted

描述

Running math.rationalize('1/(x^-2)') gives the error Cannot read property '1' of undefined.

However, running math.rationalize('1/(x^-1)') gives the result x as you'd expect.

I'm using mathjs 6.5.0. Haven't tested other versions.

贡献者指南

技术栈
javascriptnodejs
领域
toolingdeveloper experience
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Basic JavaScriptmathjs rationalize function
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
The issue involves a bug in `math.rationalize` when handling negative exponents like `x^ 2`. The error 'Cannot read property '1' of undefined' suggests a problem in parsing or simplifying the expression. Start by examining the source code for `rationalize` in `src/function/algebra/rationalize.js` and trace how it handles power nodes with negative exponents. Check the issue comments for any hints from maintainers or contributors.