立方根的问题 [英] Problem with cubic roots

问题描述

我是一名退休工程师，重振了我对程序的了解。



立方方程a = 2，b = -3，c = -3，d = 2

我得到D = 729，sqrt（D）= 27 p = -2.25，q = 0



我知道图中的根为-1; 0.5; 2但是使用基本的论文中的代码我会得到不同的答案。

请让我知道我哪里出错了。你的代码是Java还是Javascript？



我尝试过：



我还在学习Java Script，所以我使用Basic来计算答案。也许有一些基本的东西搞砸了cude root ??

I am a retired engineer reviving my knowledge of programs.

Cubic equation a=2,b=-3,c=-3,d=2
I get D=729, sqrt(D)=27 p=-2.25, q=0

I know the roots from the graph to be -1;0.5;2 but using the code in your paper with Basic I get different answers.
Please let me have suggestions where I am going wrong. Is your code Java or Javascript?

What I have tried:

I am still learning Java Script so I used Basic to compute the answers. Perhaps there is something about basic which screws up cude roots??

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