Describing a sum with a while loop
1 visualizzazione (ultimi 30 giorni)
Mostra commenti meno recenti
Hello I was woundering how you do this formula for pi as variable s in a while loop.
For example;
n=a big number
s=0
while s<=pi
s=s+n
end
Thanks!
0 Commenti
Risposte (1)
Bob Thompson
il 30 Set 2019
I'm pretty sure that adding a big number to 0 will bump you over pi on the first iteration, but maybe that's just me. I would do something more like the following:
s = 0;
tmp = 0;
k = 0;
while s<=pi
k = k + 1;
tmp = tmp + (-1/3)^k/(2*k+1);
s = sqrt(12)*tmp;
end
1 Commento
Steven Lord
il 30 Set 2019
Of course, this approach assumes you know the answer you're trying to compute.
To approximate pi without actually knowing pi you probably want to loop until the step you're adding is "small enough" for some definition of "small enough".
Vedere anche
Categorie
Scopri di più su Loops and Conditional Statements in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!