Why does matlab give me the wrong answer?

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Linus Heierhoff
Linus Heierhoff on 14 Sep 2019
Commented: Rik on 20 Sep 2019
Linus Heierhoff
Linus Heierhoff on 14 Sep 2019
I would think that i would get something like this as a answer.
ans > 2

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Answers (1)

Priyanshu Mishra
Priyanshu Mishra on 18 Sep 2019
Although this answer is not wrong, but for getting conditions on the solution, set ‘ReturnConditions’ to true. It will return any parameter in the solution and conditions on the solution. You can try following code:
clear all; close all; clc;
syms x;
eqn = x-2 >= 0;
assume (eqn)
S= solve (eqn,x,'ReturnConditions',true)
Rik on 20 Sep 2019
My problem is that many inexperienced users always see those together and don't understand what they do, but assume they are all required to set up a working script. I have no problem with people using them (I use them myself regularly), but I do think we should be selective in what we put in our answers, because like it or not, we are teaching people best practices every time we post an answer.

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