Index exceeds number of array elements (1) Heuns method

Question

Darren Tharby 2021-2-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754689-index-exceeds-number-of-array-elements-1-heuns-method

回答： VBBV 2021-11-20

% step size %
h = 0.1; 
% number of steps % 
N = 10;
x(1) = 0.1;
y(1) = 1.1;
f =  2*sin(x)+y;
for i = 1:N
    y(i+1) = y(i) + (h/2) * f(x(i),y(i)) + f(x(i+1),y(i+1)),
    y(i) + h * f(x(i),y(i));
    x(i+1) = x(i)+h;
end
plot(x,y)

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KALYAN ACHARJYA 2021-2-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754689-index-exceeds-number-of-array-elements-1-heuns-method#answer_631944

编辑：KALYAN ACHARJYA 2021-2-24

在 MATLAB Online 中打开

Please verify (Read): Heuns Method

h = 0.1; 
% number of steps % 
N = 10;
y=zeros(1,N);
x=zeros(1,N);
x(1) = 0.1;
y(1) = 1.1;
f =@(x,y) 2*sin(x)+y;
for i = 1:N
    c1=f(x(i),y(i));
    c2=f(x(i)+h,y(i)+c1*h);
    y(i+1)=y(i)+(h/2)*(c1+c2);
    x(i+1)=x(i)+h;
end
plot(x,y)