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# sqrt(2) 100 places and more

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### Accepted Answer

### More Answers (3)

Sean de Wolski
on 15 Dec 2011

If you have the symbolic math toolbox, you can try this:

syms x

vpa(subs(sqrt(x),2),100)

More per comments:

%copying first two lines from nasa file

nasa = '1.414213562373095048801688724209698078569671875376948073176679737990732478462107038850387534327641572735013846230912297024924836055850737212644121497099935831';

syms x;

mlvpa = vpa(subs(sqrt(x),2),length(nasa)-1); %subtract 1 to account for decimal

isequal(char(mlvpa),nasa)

ans = 1

woo!

Laura Proctor
on 15 Dec 2011

format long

will show 15 digits.

fprintf(1,'%.100f\n',sqrt(2))

will show 100 digits. However, that precision is not stored in sqrt(2) - you can see that most of the digits are zero.

By default, numbers are stored as double in MATLAB. In order to understand what that means, I'm linking the following page:

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