Array Error Must be Positive
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David K. on 5 Mar 2021
If you read the whole error message you see this :
Array indices must be positive integers or logical values.
This is caused by the values of t in:
y(t) = ...
The issue in this case is not that they are not positive. It is that they are not integers.
This is actually solved very simply as such:
t = 0:.1:5;
b = [2;4.7;9.2;]
y = 1-exp(-b*t)