I write in matlab
I=int('(3*x.^2-1.2)/(x.^5+1)',2,3.2) And get error Check for missing argument or incorrect argument data type in call to function 'int'.
MATLAB: Error with int function
intmathwork
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You have no symbolic variables or symbolic functions. int() is only used for symbolic expressions or symbolic functions.
For numeric integration, there are several routines, the main two of which are integral() and integral2(). However, for those you need function handles.
w=2;T=(2*pi)/w;f1 = @(t) (4+t)/2;f2 = @(t) (2-t).*cos(2*t);fplot(f1, [-T/2, 0]);hold onfplot(f2, [0, T/2]);
c0 = (1/T)*integral(f1,-T/2,0) + (1/T)*integral(f2,0,T/2)You have to first initialize x as a symbolic variable. You can find more information and examples here.
syms x f = .5*x^2int(f)
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