Re: Can't get Mathematica to evaluate correctly a difficult
- To: mathgroup at smc.vnet.net
- Subject: [mg111567] Re: Can't get Mathematica to evaluate correctly a difficult
- From: Damien Wyart <damien.wyart at free.fr>
- Date: Thu, 5 Aug 2010 07:01:29 -0400 (EDT)
- References: <i3bd7l$pjr$1@smc.vnet.net> <i3bk9b$2rh$1@smc.vnet.net>
* Peter Pein <petsie at dordos.net> in comp.soft-sys.math.mathematica: > use exact input and then evaluate with a precision greater than 22 : > In[14]:= N[173746*Sin[10^22]+94228*Log[171/10]-78487*Exp[21/50],30] > Out[14]= -1.34181895782961954970427868423*10^-12 > or change the precision of the input: > In[15]:= 173746*Sin[10^22]+94228*Log[17.1`30]-78487*Exp[0.42`30] > Out[15]= -1.341818957830*10^-12 Many thanks for this answer and also to all the people who sent a private answer. It is very much appreciated. I realize my question was maybe a bit silly, but now I understand better why my trials were not successful. Very best regards, -- DW