Vectorizing issue in MATLAB

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.

Answer 1

[Bruno Luong]

It is in general not possible to vectorize sequential calculation like yours.

[Hossein Malekahmadi]

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]

"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.