1st order The ODE
显示 更早的评论
Is there any tutorial to solve 1st order ode using rung kutta 4th order method without using ode45
采纳的回答
Of course. Either use one of the other integrators, e.g. ode15s. Although it is designed for stiff ODEs, you can process nin-stoff ODEs also. You find a lot of other integrators in the net also, e.g. in the FileExchange. Matlab offers a bunch of integrators with fixed step sizes also: https://www.mathworks.com/matlabcentral/answers/98293-is-there-a-fixed-step-ordinary-differential-equation-ode-solver-in-matlab-8-0-r2012b
You can use a cheap Euler method only: Determine the current slope by evaluating the ODE, then compute: x(i+1) = x(i) + df * h.
For my lessons of numerical maths it was a homework to write out own Runge Kutta solver. This takes less than an hour.
2 个评论
Mohammad Adeeb
2021-3-20
Jan
2021-3-27
Without using built-in functions you cannot do anything useful in Matlab. I assume only the integrator is meant.
Of course you can write your own Runge Kutta integrator. You do not need a tutorial to do this, but just some basic experiences in Matlab and the definition of the algorithm. You find tutorials for learning Matlab in the net, search e.g. for "Matlab onramp". Examples for integrators can be found also, because this is a standard homework for beginners in numerical maths.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Programming 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
