Integration of a function

4 次查看(过去 30 天)
Owen McKim
Owen McKim2021-12-4
回答: VBBV ,2021-12-4
Using the MATLAB intergral function you can integrate a function between a min and max value. integral(fun,min,max)
But I was wondering how you can show the intergated equation in MATLAB?
For example, If i intergrate I would get . How can a display that in MATLAB.

回答(4 个)

KSSV 2021-12-4
syms x
f = 3*x-x^2 ;
iwant = int(f,x)
iwant = 

Chunru 2021-12-4

John D'Errico
John D'Errico 2021-12-4
Integral is a NUMERICAL tool for integration, uing adaptive numerical methods. It will return a NUMERICAL result, and only applies to definite integrals. Nothing more.
You need to use symbolic tools to perform an integration. That means you need to use syms.
syms x % creates x as a symbolic variable
int(x^2 + 2) % use int, NOT integral
ans = 

VBBV 2021-12-4
syms x
f = 3*x-x^2 ;
F = int(f,x);
ans = 




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