question about the using of the loop function

2 views (last 30 days)
Hello, How can I use the final results obtained from the first iteration of a loop function in the second iteration of the same loop? For example, let T=[100:200], and A(T0) and k are constant known values. for T=T1, I want to calculate the following: I(T1)=A(T0).* exp(T1)
A(T1)=I(T1).* k
However, for T=T2, I want to calculate:
I(T2)= A(T1).* exp(T2)
A(T2)=I(T2).*k
and,
fot T=T3,
I(T3)= A(T2).* exp(T3)....and so on.
A(T3)=I(T3) Thanks

Accepted Answer

Star Strider
Star Strider on 7 Jun 2014
With T that large, you quickly end up with an array of Inf values.
This loop will do what you want:
A0 = 3;
k = 5;
I(1) = A0 * exp(100);
A(1) = I(1)*k;
for T = 2:100
I(T)= A(T-1).* exp(T+99);
A(T) = I(T)*k;
end
I started the loop counter at 1 rather than 100 because otherwise your arrays are padded with 99 zeros. That takes up memory.
  2 Comments
Amr Sadek
Amr Sadek on 7 Jun 2014
Thank you. This is exactly what I want. I will try to apply it now on my real equations.
Star Strider
Star Strider on 7 Jun 2014
My pleasure!
(The sincerest form of appreciation here on MATLAB Answers is to Accept the Answer that most closely solves your problem.)

Sign in to comment.

More Answers (0)

Categories

Find more on Loops and Conditional Statements in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!