How to Integrate the equation with function handler?

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gourav pandey
gourav pandey 2021-4-15
评论： Ioannis Matthaiou 2021-4-15
%% Thank you in advance!!
clc;
clear;
close all;
syms omega1
n=2;
a1=1;
x=2;
y=2;
G_2=5;
Q_2=0;
A_hs =-G_2/omega1^2;
B_hs =(-G_2*abs(omega1) - Q_2*1i*omega1)/omega1^2;
Phi=(A_hs+B_hs.*x).*exp(-abs(omega1).*x);
f=@(omega1) A_hs.*(exp(-x*abs(omega1))).*exp(-1i.*omega1.*y);
sigma_xx=(integral(f,-2,2))
### showing Some error in calculation

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回答（1 个）

Ioannis Matthaiou
Ioannis Matthaiou 2021-4-15
The command can be as follows:
sigma_xx=ode45(@(t,omega1) f(t,omega1,x,y), tspan, ICs, options)
The function to integrate as follows:
function sigma_x = f(t,omega1,x,y)
sigma_x = A_hs.*(exp(-x*abs(omega1))).*exp(-1i.*omega1.*y);
end
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Ioannis Matthaiou
Ioannis Matthaiou 2021-4-15
Hello,
Please read the following official documentation: https://uk.mathworks.com/help/matlab/ref/ode45.html

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