how to write code for intergral with two variables?

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)
ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ
then the process did not finish. what's wrong on my code?
and how to plot this function?

回答 (1 件)

Surya Talluri
Surya Talluri 2020 年 8 月 12 日

0 投票

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])

カテゴリ

製品

リリース

R2020a

質問済み:

2020 年 5 月 17 日

回答済み:

2020 年 8 月 12 日

Community Treasure Hunt

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

Start Hunting!