Functions returns variable values at each iteration

2016 3 26
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更新时间：2016 3 26
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So I have this function where I'm calculating the values of the U matrix at each t value (0,1,2,etc.). The problem I'm having is that the function only returns the final value for U, and does not return t value. To illustrate what I'm trying to get, here's an example:
t x y
0 2 1
1 2.6 0.9
2 3.458 0.891
etc.
function [U,t] = IVP(a,b,c)
syms x y h t;
h=c;
x=a;
y=b;
for t=0:1:30
f=[1.2*x-0.6*x*y;0.3*x*y-0.8*y];
u=[x;y];
U=u+h*f;
x=U(1);
y=U(2);
end
end

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 采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-3-26
编辑：Azzi Abdelmalek 2016-3-26

0 个投票

U=[];
for t=0:1:30
f=[1.2*x-0.6*x*y;0.3*x*y-0.8*y];
u=[x;y];
w=u+h*f;
U=[U w];
x=w(1);
y=w(2);
end
t=(0:1:38)'

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