Finding approximate real solution to a equation

13 次查看（过去 30 天）
Vinit Nagda
Vinit Nagda 2021-9-22
评论： Vinit Nagda 2021-9-22
Can anyone please help me, how to find the approximate real solution to the following polynomial:
syms x
eqn=0.0941*x^3+0.1926*x-1500;
I used solve and simplify functions, but I don't get a real value.

请先登录，再回答此问题。

采纳的回答

Alan Stevens
Alan Stevens 2021-9-22
You don't need syms here. Try the roots function.
help roots
  3 个评论
显示 1更早的评论
Alan Stevens
Alan Stevens 2021-9-22
Ran in:
You could try something like
coeffs = [0.0941, 0, 0.1926, -1500];
r = roots(coeffs);
indicator = find(r==real(r));
disp(r(indicator))
25.1400

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 Polynomials 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

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

Start Hunting!

Translated by