Re: Why Doesn't N[Pi,i] Give i Digits For Small i, Mathematica 4,on NT

• To: mathgroup at smc.vnet.net
• Subject: [mg20242] Re: [mg20220] Why Doesn't N[Pi,i] Give i Digits For Small i, Mathematica 4,on NT
• From: BobHanlon at aol.com
• Date: Fri, 8 Oct 1999 18:30:17 -0400
• Sender: owner-wri-mathgroup at wolfram.com

Use NumberForm

Table[{i, NumberForm[N[Pi, i], i]}, {i, 1, 20}]

Bob Hanlon

In a message dated 10/7/1999 2:53:28 AM, randmarg at magma.ca writes:

>If I execute:
>
>Table[{i, N[Pi, i]}, {i, 1, 20}]
>
>I get:
>
>{{1, 3.14159}, {2, 3.14159}, {3, 3.14159}, {4, 3.14159}, {5, 3.14159},
>{6,  3.14159}, {7, 3.14159}, {8, 3.14159}, {9, 3.14159}, {10, 3.14159},
>{11, 3.14159}, {12, 3.14159}, {13, 3.14159}, {14, 3.14159}, {15,
>3.14159}, {16, 3.14159}, {17, 3.1415926535897932},
>{18, 3.14159265358979324}, {19, 3.141592653589793238},
>{20, 3.1415926535897932385}}
>
>I'd expect something like
>{{1,3},{2,3.1},{3,3.14},{4,3.141},{5,3.1416},{6,3.14159},{7,3.141593},....
>
>
>
>It seems N[] only works as expected above 16 digits of requested
>precision.
>
>Is my expectation wrong?  What should I do to get what I want?
>
>My platform is WinNT 4 SP4.
>

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