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D.12.1.4 wurzel

Procedure from library aksaka.lib (see aksaka_lib).

Usage:
wurzel(r);

Assume:
characteristic of basering is 0, r>=0

Return:
number, square root of r

Example:
 
LIB "aksaka.lib";
ring R = 0,x,dp;
wurzel(7629412809180100);
==> 3441627728253432342460392959727860033763217944264409977345966987271065114\
   312760850623650284932735229349074748323911534788709/394020061963944792122\
   7904010014361380507973927046544666794829340424572177149721061141426625488\
   4915640806627990306816

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