清空筛选条件
清空筛选条件

Clear symbolic from an equation and make it mathematical function

4 次查看（过去 30 天）
Nikolas Spiliopoulos
评论： Nikolas Spiliopoulos 2021-9-20
Hi all,
I have an equaton of x, using syms x to create it.
However afterwards I want to clear the symbolic value and convert it to a mathematical function f(x), in order to represent it graphically for various x values.
I tried it manually by just doing copy paste, but the problem is that I get an error ",x" meaning I need again manually to fix it.
Is it possible to do it automatically?
thanks
example
syms x
f=(17*exp((281*x)/50000))/1000 + (4777*x*exp((281*x)/50000))/50000000
afterwards in order to put values (without symbolic values) it should be like that (using ".x"):
x=4.5:1:40.5;
g=(17*exp((281*x)/50000))/1000 + (4777*x.*exp((281*x)/50000))/50000000;

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2021-9-20
Ran in:
syms x
f=(17*exp((281*x)/50000))/1000 + (4777*x*exp((281*x)/50000))/50000000
f = 
ff = matlabFunction(f);
x=4.5:1:40.5;
plot(x, ff(x))

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Symbolic Math Toolbox 的更多信息

标签

产品


版本

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by