清空筛选条件
清空筛选条件

How to interprete output of solve function ?

1 次查看（过去 30 天）
andrea
andrea 2020-6-15
编辑： madhan ravi 2020-6-15
Hello, I'm trying to solve with math tool box a non liner equation :
with the code
syms x
solve ( x^2-(1+x)^2 + x^2*(1+x)^2 )
The output I can't understand is :
root(z^4 + 2*z^3 + z^2 - 2*z - 1, z, 1)
root(z^4 + 2*z^3 + z^2 - 2*z - 1, z, 2)
root(z^4 + 2*z^3 + z^2 - 2*z - 1, z, 3)
root(z^4 + 2*z^3 + z^2 - 2*z - 1, z, 4)
How shoul I interpret this ? I would like somthing more like a numeric root but maybe the problem is with the equation itself?

请先登录，再回答此问题。

采纳的回答

madhan ravi
madhan ravi 2020-6-15
编辑：madhan ravi 2020-6-15
syms x
double(solve ( x^2-(1+x)^2 + x^2*(1+x)^2 , 'MaxDegree', 4))

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Conversion Between Symbolic and Numeric 的更多信息

标签

产品


版本

R2020a

Community Treasure Hunt

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

Start Hunting!

Translated by