how can I get a y value for a chosen x value.

I solved 5 ODEs which follow the the change of y with respect to time (t).This resulted in the the matrix [t,y] .The maximum value of t is 4.

I want to get the values of y for all the 5 equations at t=4.I have used the following code for getting the value of y but it is displaying the y value for the first equation only.

index=find(t==4);
yDesired=y(index);

How do I edit the code to display the values of y for all the 5 equations ?

Answer 1

[Jan]

yDesired=y(index, :);
%                 ^

But this gives you the trajectory and all but the last derivative. To get "all equations" it is the easiest solution to call the function to be integrated:

[last_t, last_y] = YourODE(t(end), y(end, :))

[Vanessa Chimedza]

Thank you .It worked!