how to solve piece-wise function?
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f(x)= {1 if x>=0, 0 if x=0, -1 if x<=0
2 Comments
Guillaume
on 10 Nov 2015
Note that your function is ill-defined for x == 0, since it passes all three conditions. You should use strict comparison, < instead of <=.
Answers (1)
Guillaume
on 10 Nov 2015
Edited: Guillaume
on 10 Nov 2015
I'm not sure what you mean by solve. The roots of that function is obviously just 0.
2 Comments
Guillaume
on 10 Nov 2015
How to write functions and how to use if statement is covered in the Getting Started tutorial in the doc and in million of other tutorials.
function s = mysignum(x)
if x > 0
s = 1;
elseif x < 0
s = -1;
else
s = 0;
end
end
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