#12120: Improve documentation of numerical_approx()
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Reporter: saraedum | Owner: mvngu
Type: enhancement | Status: new
Priority: trivial | Milestone: sage-4.8
Component: documentation | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Julian Rüth
Merged: | Dependencies:
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In a class on computer algebra, students were surprised by the behavior of
the N() function. Here are some minimal examples that should illustrate
the issues we ran into:
{{{
sage: x=N(pi,digits=3); x
3.14
sage: y=N(3.14,digits=3); y
3.14
sage: x==y
False
}}}
{{{
sage: N(pi,digits=1)
3.2
}}}
{{{
sage: N(pi-3,prec=2)
0.00
}}}
Imo, none of these is a bug, but I believe that the documentation should
be improved.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12120>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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