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How can I increase the precision of a limit to give a number with more digits?

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Sergio Manzetti
Sergio Manzetti 2017-12-8
编辑： Stephen23 2017-12-8
Hi, I have the following:
C= 1/a
f = (C - (exp(-2x)).*(C - ((h)./2) + (g.*x))
limit(f,var,a)=W
double(W)
However double does not work. I would like to have more digits in the picture, as g has pi in it. How can that be done?
Thanks

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KL
KL 2017-12-8
if you want to display it on the command line, use
format long
if you want to write to a file, use fprintf
fprintf('%4.12f',pi)

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