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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);
==> 6883255456506864684920246597795190329323071015098860239643007750747986003\
   90182946404812945810080840648012617803165947407931/7880401239278895842455\
   8080200287227631288133096501076508010806854050675363758546037779405250512\
   20740674571323129192


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