Question

f:R->R, f(x)=3x-5.
Calculati:
f(1)+f(2)+...+f(2014).

Answer 1

f(1)=3*1-5=-2
f(2)=1
f(3)=4  Observi
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f(2014)=6037  Obsrvi  ca  termenii  cres  din  3  in  3.asta e o  pg aritmetica.aplici formula sumei .Sn=(a1+an)*n/2
n=2014
a1= -2
an=6037
S2014=(-2+6037)*2014/2=...continui  tu