Question

Se considera functia f: R -->R , f(x)=2-x .Calculati f(1)+f(2)+f(3)+....+f(99)+f(100) .

Answer 1

f(1)=2-1=1
f(2)=2-1=0
f(3)=2-3=-1
................
f(99)=2-99=-97
f(100)=2-100=-98

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