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Stiind ca f(x)=-2x+1 , aflati
S= f(0)+f(1)+...+f(2014)


Răspuns :

f(0)=-2*0+1=1
f(1)=-2*1+1=-2+1=-1
f(2)=-2*2+1=-4+1=-3
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f(2014)=-2*2014+1=-4028+1=-4027

f(0)+f(1)+.....+f(2014)= 1+(-1) +(-3).......+(-4027) = (1+(-4027) )*2015 totul pe 2

=   (-4026*2015)/2=-2013*2015=-4056195