Questions tagged [ode45]
140 questions
0
votes
0 answers
Crank Nicolson MATLAB
Is there any inbuilt solver in MATLAB that solves a given ODE (order>1) using Crank-Nicolson Method? (Note that I have a system of ODE's, so I might solve each one of them using Crank-Nicolson. I tried ode45, but I am not getting correct results)
learntocode
- 9
- 2
-1
votes
2 answers
how to replace the ode45 method with the runge-kutta in this matlab?
I tried everything and looked everywhere but can't find any solution for my question.
clc
clear all
%% Solving the Ordinary Differential Equation
G = 6.67408e-11; %Gravitational constant
M = 10; %Mass of the fixed object
r = 1; %Distance…
Ali Haydar
- 13
- 3
-1
votes
1 answer
system of differential equations with ode45 in matlab
I have got this model for glucose and insulin, and system of differential equations:
Where:
G(t) - the plasma glucose concentration at time t
I(t) - the plasma insulin concentration at time t
X(t)- the interstitial insulin at time t
Gb - the basal…
tobi245
- 1
- 1
-2
votes
1 answer
Error tolerance not working in C++, when plotted against ODE45 in MATLAB
I am comparing the ODE solver of C++ (BOOST ODEINT) against MATLAB's ODE45. Each set of code has the same equations and initial conditions. When error tolerance is added to the C++ code, the difference between the two values (C++ and MATLAB) is…
Jon Snow
- 1
- 1
-2
votes
1 answer
MatLab ode45 explanation
For a project I need to understand a matlab code, but as I am quite new I dont really understand what is happening. I have a function file and a script file.
Function:
function dxdt = sniffer_ode(t,x,par,tu)
X = x(1);
R = x(2);
k1 = par(1);
k2…
Joel
- 3
- 2