Find minimum points matlab

3 次查看（过去 30 天）
Noa Yelin
Noa Yelin 2020-10-20
评论： Noa Yelin 2020-10-20
Hey,
I need to find minimum points. I wrote this code -
syms x real
f=(x^2)-4*x+9;
d1=diff(f,1);
res=solve(d1==0);
min(vpa(res,4))
and i get the answer - is this correct? and if I want to find the Y, so what I need to do?
ans =
2.0

请先登录，再回答此问题。

回答（1 个）

KSSV
KSSV 2020-10-20
编辑：KSSV 2020-10-20
subs(d1,res)
You will get it as zero.....so the value x = 2 is a root to d1.
Also your d1 = 2*x-4.
On solving manually 2*x-4 = 0, you will get x = 2.
  5 个评论
显示 3更早的评论
KSSV
KSSV 2020-10-20
As your d1 is a linear equation.....you will get only one root.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Solver Outputs and Iterative Display 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