Question

f(x)=3x-2   Sa se calculeze suma f(1)+f(2)+....+f(2014)

Answer 1

f(1)=3*1-2=1
f(2)=3*2-2=4
f(2014)=3*2014-2=6042
r(ratia)=3
a1=1
a2=4
an=6042
n=2014
S=[n(a1+an)]/2
S=[2014(1+6042)]/2
S=(2014*6043)/2=6085301