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Losing Digits

• To: mathgroup at smc.vnet.net
• Subject: [mg61964] Losing Digits
• From: Martin Stoll <martin.stoll at mathematik.tu-chemnitz.de>
• Date: Sun, 6 Nov 2005 05:11:41 -0500 (EST)
• Organization: Chemnitz University of Technology
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

I'm chasing for a lot of Digits in my mathematica computation.
Unfortunately, I started mathematica two days ago and I do not
understand every behaviour yet.
Now, to the problem. I set Ndigits to 200 and using the N
function for declaring some variables to be very accurate.
But after

t=Max[Cases[t./Solve[(p[[1]]+t*v[[1]])^4+(p[[2]]+t*v[[2]])^4==1,t],_?Positive]];


I lost  almost all of the 200. How I can force this equation to
be very accurate?

Thank you for your help.

Regards,
Martin