A1 Matlab

Primer upotrebe ode23/ode45 – model sa parametrima �
• ode23/ode45 omogućava
zadavanje parametara
modela
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x�
1
2
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x
1
� �x
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2
1
x
2
� �x
1
x
2
1000
function xp = lotka7( t, x, alpha, beta )
% Lotka-Volterra model
xp = [ x(1) - alpha*x(1)*x(2)
-x(2) + beta*x(1)*x(2) ];
0
0 5 10 15 20
» al = 0.01;
» be = 0.02;
» [ t, x ] = ode45( @lotka7, [0, 10], [1; 1], [ ], al, be );
» plot( t, x, ‘.-’ )
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