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Vectorizing issue in MATLAB

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Hi I have problem with vectorizing in MATLAB that im not even sure there is possible way to do it, i glad if you can check it as well.
a(1)=1000;
for i=1:20
a(i+1)=sqrt((a(i)+1));
end
Is there any way to vectorizing it or i should use "for" when i want use this type of functions?
i tried search for answer, i didnt find any, i hope some one can answer me thanks.

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Accepted Answer

Bruno Luong
Bruno Luong on 21 Jan 2021
It is in general not possible to vectorize sequential calculation like yours.

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Hossein Malekahmadi
Hossein Malekahmadi on 21 Jan 2021
i wrote a code that there is lots of sequential fuction in it.
and when i show it to some one, he told me you use lots of "for" it increase your running time. btw thanks for your time sir.
Bruno Luong
Bruno Luong on 21 Jan 2021
"he told me you use lots of "for" it increase your running time"
You are miss informed by this person.
It all depends what you do inside the for-loop. Yours look OK to me.

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