Solving non-linear ODE
1 view (last 30 days)
Show older comments
Advay Mansingka
on 14 May 2021
Commented: Advay Mansingka
on 14 May 2021
I am trying to solve the following differential equation:
The code I am using is:
function EP_equation
syms y(t)
time_range = [0 5];
init_vals = 0.01;
[t, y] = ode45(@(t,y) simple_ode(t,y), time_range, init_vals);
figure
plot(t,y, 'LineWidth', 2)
xlim(time_range)
end
function dRdt = simple_ode(t,R)
dRdt = (1/R + 1/t^0.5);
end
However I am unable to get an answer. Please do let me know if there are things I can do to fix this, or obvious flaws in the code.
Thank you!
0 Comments
Accepted Answer
Walter Roberson
on 14 May 2021
Your equation has 1/sqrt(t) and initial t of 0. That gives you 1/sqrt(0) -> 1/0 -> infinity at the start
EP_equation
function EP_equation
syms y(t)
time_range = [eps(realmin) 5];
init_vals = 0.01;
[t, y] = ode45(@(t,y) simple_ode(t,y), time_range, init_vals);
figure
plot(t,y, 'LineWidth', 2)
xlim(time_range)
[min(t), max(t)]
whos y
[min(y), max(y)]
end
function dRdt = simple_ode(t,R)
dRdt = (1/R + 1/t^0.5);
end
More Answers (0)
See Also
Categories
Find more on Ordinary Differential Equations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!