How to get the decimal values using solve in MATLAB

8 次查看（过去 30 天）

Khoa Nguyen 2023-2-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1919415-how-to-get-the-decimal-values-using-solve-in-matlab

评论： Walter Roberson 2023-2-27

So I am using solve in MATLAB to solve an inequation in MATLAB, to find the syms trough_rot_speed, here are the code

syms trough_rot_speed; 
assume(trough_rot_speed,'positive')
A_equation = (sind(Alpha_deg-Beta_deg)/cosd(Beta_deg))*((a*trough_rot_speed^2)/9.8);
solution = solve( sqrt(pi^2+1)> A_equation> 1.15,trough_rot_speed,'ReturnConditions', true);

All the values are known except trough_rot_speed, I access the results by the following code

solution.conditions

But I get the value in fraction, like this:

How do I get it in decimal values, for example: x < 203.442....

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2023-2-27

在 MATLAB Online 中打开

solution = solve( sqrt(pi^2+1)> A_equation> 1.15,trough_rot_speed,'ReturnConditions', true);

Chaining relative comparisons does not work for numeric values, and does not work reliably for solve(). The only place it works reliably is piecewise(). You should rewrite as two conditions joined with &

请先登录，再进行评论。

请先登录，再回答此问题。