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我按照上http://www.mit.edu/people/abbe/matlab/ode.html教程和如下制备的函数:Matlab的二阶导数
function dxy = diffxy(xy)
%
%split xy into variables in our equations
%
x = xy(1);
xdot = xy(2);
y = xy(3);
%
% define the derivatives of these variables from equations
%
xdot = xdot;
ydot = 3*x + 2*y + 5;
xdoubledot = 3 - ydot + 2*xdot;
%
%return the derivatives in dxy in the right order
%
dxy = [xdot; xdoubledot; ydot]
end
当我打电话它使用
[T, XY] = ode45('diffxy',0,10,[0 1 0])
我得到一个错误
??? Error using ==> diffxy
Too many input arguments.
我也试过
XY = ODE45(@diffxy,[0 10],[0; 1; 0])
任何人有任何想法?
尼斯和清洁THX。我新来这个东西... – dramaticlook 2013-03-01 13:35:44