ode45 command syntax error

2 次查看（过去 30 天）
Thomas Holmes
Thomas Holmes 2019-4-16
评论： Thomas Holmes 2019-4-16
I am trying to use ode45 to plot this differential (dy/dx)= -0.00043y with this intial condition y(0)=1 on the interval [0 30000]. I tried to use this code but I just get the following error message.
[x5,y5]=ode45(@(y) -0.00043*y ,[0 30000],1)
Error using HW07Prob2>@(y)-0.00043*y
Too many input arguments.
Error in odearguments (line 90)
f0 = feval(ode,t0,y0,args{:}); % ODE15I sets args{1} to yp0.
Error in ode45 (line 115)
odearguments(FcnHandlesUsed, solver_name, ode, tspan, y0, options, varargin);
Error in HW07Prob2 (line 10)
[x5,y5]=ode45(@(y) -0.00043*y ,[0 30000],1);
Can someone help me figure out what I am doing wrong?

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2019-4-16
Your ode anonymous function must accept both y and y. @(t,y). You do not need to pass t into your actual function.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by