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a fost răspuns

Se considera functia f:R->R,f(x)=-2×+1. Calculeaza f(-1)+ f(0 )+f(1).

Răspuns :

Caraulovc
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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