Coeffs functions needs revision
1 view (last 30 days)
Show older comments
I have now spent half a day digging through piles of code because no one has apparently caught this before
The coeffs function has serious inconsistancy within and should be changed by math works at the source level
I might also add no where in the documentation does it tell you the coeffs function returns its values in the form of the highest or lowest power first. Causing me to loose half a day of work
When used alone it returns the lowest power first
syms x
c = coeffs(16*x^2 + 19*x + 11)
c =
[ 11, 19, 16]
When used with an additional variable it returns with highest power first
syms x
[c,t] = coeffs(16*x^2 + 19*x + 11)
c =
[ 16, 19, 11]
t =
[ x^2, x, 1]
This has caused me much headache today and NEEDS TO BE DOCUMENTED BY MATLAB or at a minimum additional functionality should be added to select the order of how you want the powers to be returned.
I hope this post saves someone else the time i lost today
0 Comments
Answers (1)
Asad (Mehrzad) Khoddam
on 10 Oct 2016
According to matlab documentation you should use
c = coeffs(16*x^2 + 19*x + 11,'All')
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!