how to write code for intergral with two variables?

2 Ansichten (letzte 30 Tage)
akdlcnd3gh
akdlcnd3gh am 17 Mai 2020
Beantwortet: Surya Talluri am 12 Aug. 2020
I want to plot this function
f={(1+cos(w))*cos(w*x)}/(pi^2-w^2)+sin(w)*sin(w*x)/(pi^2-w^2)
int(f,w,0,n)
so i wrote code for this function
ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ
x=-3:0.01:3;
syms w
A=(1+cos(w))*cos(w*x);
B=sin(w)*sin(w*x);
C=pi^2-w^2;
f=A/C+B/C;
F5=int(f,'w',0,5)
plot(x,F5)
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then the process did not finish. what's wrong on my code?
and how to plot this function?

Antworten (1)

Surya Talluri
Surya Talluri am 12 Aug. 2020
I understand that you are trying to get integral values at 600 values of x, which is taking so much time to run. You can use “fplot” function to plot any symbolic expressions in required interval.
syms w x
pi = sym(pi)
A=(1+cos(w))*cos(w*x);
B=sin(w)*sin(w*x);
C=pi^2-w^2;
f=A/C+B/C
F5=int(f,w,0,5)
fplot(F5, [-3, 3])

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