hello. why neper number in matlab and neper number in wikipedia with address (http://en​.wikipedia​.org/wiki/​E_(mathema​tical_cost​ant)) up to 15 decimal places is the same and than 15 different next? which one is correct?

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abolfazl rasoolizadeh
abolfazl rasoolizadeh il 21 Nov 2015
Risposto: John D'Errico il 21 Nov 2015

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John D'Errico
John D'Errico il 21 Nov 2015
MATLAB uses double precision, so roughly 16 significant digits.
format long g
exp(1)
ans =
2.71828182845905
vpa(exp(sym(1)),100)
ans =
2.718281828459045235360287471352662497757247093699959574966967627724076630353547594571382178525166427

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