Finding roots of symbolic polynomial on given interval

5 次查看（过去 30 天）
Argento
Argento 2016-4-8
编辑： Argento 2016-4-8
Hello all, I am trying to find all the roots of a symbolic polynomial on the given interval [0, 1].
For my function, the plot shows 11 roots in the interval. I have been trying to no avail. This is what I have:
g(x) = 2097152*x^11 - 11534336*x^10 + 27394048*x^9 - 36765696*x^8 + 30638080*x^7 - 16400384*x^6 + 5637632*x^5 - 1208064*x^4 + 151008*x^3 - 9680*x^2 + 242*x - 1;
Ideally, I would need to put these roots in a vector. Thanks for the guidance.

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-8
编辑：Azzi Abdelmalek 2016-4-8
syms x
g = 2097152*x^11 - 11534336*x^10 + 27394048*x^9 - 36765696*x^8 + 30638080*x^7 - 16400384*x^6 + 5637632*x^5 - 1208064*x^4 + 151008*x^3 - 9680*x^2 + 242*x - 1
c=sym2poly(g)
r=roots(c)
  1 个评论
Argento
Argento 2016-4-8
编辑：Argento 2016-4-8
Thank you Azzi, just seconds before your answer I also found the following method:
vpa(solve(g(x), x))
Many thanks!

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Assumptions 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by