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Se considera functia f:R-R, f(x)=2-x. Calculati f(1)+f(2)+f(3)+.....+f(100)

Răspuns :

Miky93ask
f(1)=2-1=1
f(2)=2-2=0
f(3)=2-3=-1
...............
f(100)=2-100=-98

S=(1-98)*100/2= -97*50= -4850

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