Question

我有以下功能：

function ypdiff = ypdiff(t,y)
    a = 0.01;
    b = 0.1;
    ypdiff(1) = -a*y(1)*y(2);
    ypdiff(2) = b*y(1)*y(2)-b*y(2);
    ypdiff(3) = b*y(2);
    ypdiff = [ypdiff(1) ypdiff(2) ypdiff(3)]';

如果我想解决这个问题，我会按如下方式调用ode45函数：

[t y] = ode45(@ypdiff, [to tf], yo);

但是如果我想将参数传递给这个函数，我将如何使用ode45函数？具体来说，我正在尝试以下表述：

function ypdiff = ypdiff(t,y,u)
    a = 0.01;
    b = 0.1;
    ypdiff(1) = -a*u*y(1)*y(2);
    ypdiff(2) = b*u*y(1)*y(2)-b*y(2);
    ypdiff(3) = b*u*y(2);
    ypdiff = [ypdiff(1) ypdiff(2) ypdiff(3)]';

Answer 1

您可以在matlab中使用anonymous function（类似于其他语言的lambda函数）：

u = 1.2;
[t y] = ode45(@(t, y) ypdiff(t, y, u), [to tf], yo);

MATLAB：如何将参数传递给函数？

1 个答案: