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Question: nops problem

Question:nops problem

SandorSzabo 607 Maple
August 18 2007
0
Sorry, but I don't understand why Maple produces two different answers. (I make many analysis calculations, some expressions [math functions] come directly, e.g. 5x-3, some by Maple e.g. by series command.) 
s:=x-1/2*x^2+1/3*x^3+O(x^4);

                               1  2   1  3    / 4\
                           x - - x  + - x  + O\x /
                               2      3           
t:=series(ln(1+x),x,4);

                               1  2   1  3    / 4\
                           x - - x  + - x  + O\x /
                               2      3           
nops(s);

                                      4
nops(t);

                                      8
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