Avoiding for-loops with subsequent elements in arrays

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Sim
Sim on 9 Jun 2020
Commented: Sim on 9 Jun 2020
Hi, given this
x = [0 10 20 30];
y = [20 10 10 15];
could you suggest a more compact (and faster) way to perform this operation?
A(1) = (y(1) - y(2)) / (x(2) - x(1));
for i = 2 : 4
A(i) = (y(i-1) - y(i)) / (x(i) - x(i-1));
end
Thanks to everyone!

Accepted Answer

madhan ravi
madhan ravi on 9 Jun 2020
Edited: madhan ravi on 9 Jun 2020
-[0, diff(y) ./ diff(x)]
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