Integration of a function
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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.
I would get . How can a display that in MATLAB.Thanks
回答（4 个）
syms x
f = 3*x-x^2 ;
iwant = int(f,x)
Chunru
2021-12-4
0 个投票
Check below documentation:
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
syms x
f = 3*x-x^2 ;
F = int(f,x);
expand(F)
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2021-12-4
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