Solve system of differntial equation with one variable

조회 수: 1(최근 30일)
dydt= f(t,y)
t=0:0.0.1:1;
dydt(1) = ( 1.15125859*10^-17)*1i;
dydt(2) = ( 2.77307307*10^-17)*1i;
dydt(3) = ( 8.3780271*10^-17)*1i;
댓글 수: 1표시숨기기 없음
How can i solve these 3 quations . Also i want to find how y1,y2,y3 varies from t=0 to t=1;

댓글을 달려면 로그인하십시오.

답변(1개)

Piotr Balik 2021년 1월 3일
One easy way to solve ODE's is using ode45 solver.
Define your derivative function in separate file, just as in your question:
function dydt = myODE(t,y)
dydt(1) = (1.15125859*10^-17)*1i;
dydt(2) = (2.77307307*10^-17)*1i;
dydt(3) = (8.3780271*10^-17)*1i;
end
And call for the solver:
t=0:0.01:1;
initial=[0 0 0]'; %column form
[t,y]=ode45(@myODE,t,initial);
%visualize
plot(t,y)
댓글 수: 4표시숨기기 이전 댓글 수: 3
The code worked.
But i got a warning, "complex parts of imaginary numbers x and y are ignored ".
Also all the results are.
Actually from the above 3 equations, i want to find y1,y2,y3. where t varies from 0 to1.
Can anyone help?
Thank you

댓글을 달려면 로그인하십시오.

Community Treasure Hunt

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

Start Hunting!

Translated by