How to get all the coefficients of a polynomial with symbolic coefficients?
조회 수: 3 (최근 30일)
이전 댓글 표시
I tried this
syms f1 f2 z
a = (f1-f2)*z^2 + f1*z +1
coeffes(a,z,'all')
I expected to get [f1-f2, f1, 1]But it reports error. Does anyone know any other methods to do this?
댓글 수: 0
채택된 답변
Star Strider
2017년 4월 28일
The method you are using is correct. Your spelling of the coeffs function is not.
Try this:
syms f1 f2 z
a = (f1-f2)*z^2 + f1*z + 1;
[cfs,trms] = coeffs(a,z,'all')
cfs =
[ f1 - f2, f1, 1]
trms =
[ z^2, z, 1]
댓글 수: 0
추가 답변 (1개)
John D'Errico
2017년 4월 28일
편집: John D'Errico
2017년 4월 28일
If you type the name of the function properly, it will work.
syms f1 f2 z
a = (f1-f2)*z^2 + f1*z +1;
coeffs(a,z,'all')
ans =
[ f1 - f2, f1, 1]
Based on this and the last question I answered from you, I would suggest learning to be more careful in your typing.
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Assumptions에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!