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Storing Values From a Loop

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Kyle Fertig
Kyle Fertig 2017-11-5
评论： Kaushik Lakshminarasimhan 2017-11-5
I'm doing a project involving an implementation of Euler's method for class, and am using a "for" loop to increment my values. The code below runs, but whatever new y value I get is overwritten as the loop goes through. I need to be able to save those y values after each time through the loop and put them into a matrix so that they can later be graphed. I'm not sure how to do this, so any help is appreciated!
a=1250
q=500
c=160
n=0.5
y=1.1
for t=0:n:2
s=3*(q/a)*sin(t)^2-(c*(1+y)^1.5)/a
y=y+s
end
Thanks,
-Kyle

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采纳的回答

Kaushik Lakshminarasimhan
Replace
s=3*(q/a)*sin(t)^2-(c*(1+y)^1.5)/a
y=y+s
with
s=3*(q/a)*sin(t)^2-(c*(1+y(end))^1.5)/a;
y=[y y(end)+s];
  2 个评论
Kyle Fertig
Kyle Fertig 2017-11-5
That's awesome, thanks! How does the (end) thing work? I assume it's a sort of function since the "s=" equation is still starting y at 1. 1
-Kyle
Kaushik Lakshminarasimhan
Kaushik Lakshminarasimhan 2017-11-5
end is a keyword, not a function. It simply picks out the last element of an array. For example, if x = [1 2 3 4 5], then x(end) = 5

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