How to plot a first order differential equation with singular point?

2016 8 17
1 个回答
回答已采纳
更新时间：2016 8 17
2 次查看（30 天）

0 个投票

Is there a way to plot a first or second order differential equation with singular point? Example equation:
(1-y^2)*y" + 5*y' + 3*y = 0
Usually I get error message from ode about division by zero.

请先登录，再回答此问题。

 采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-8-17

0 个投票

Save this file as odef.m
function dx=odef(t,x)
dx=zeros(2,1)
dx(1)=x(2);
dx(2)=(-5*x(2)-3*x(1))/(1-x(1)^2)
Then call it
%y'(0)=0.1 and y(0)=0.1 are initial conditions
tspan=[0 10]
[t,y]=ode45(@odef,tspan,[0.1 ;0.1])
plot(t,y)

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

产品

标签

Community Treasure Hunt

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

Start Hunting!

Translated by