ans: zero

sol:

f'=1/2*p^(-1/2)*p' where p=1+4x^2+ ...+x^8

f''=1/2*(-1/2)*p^(-3/2)*p' + 1/2*p^(-1/2)*p''

etc etc

f'''''''''''-polinom consisting of members like a*p^b*p'''' ,all

members being equal to zero since all derivatives are 0 at x=0

blackjack

flooble's webmaster puzzle