Question

f(x)=x-2

Calculeaza

f(1)+f(2)+f(3)+.....+f(50)​

Answer 1

f(x)=x-2

f(1)=1-2=-1

f(2)=2-2=0

f(3)=3-2=1

f(4)=4-2=2

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f(49)=49-2=47

f(50)=50-2=48

=> -1+0+1+2+3+...+47+48

$\frac{48*(48+1)}{2} =\frac{48*49}{2} =24*49=1176$

=>2+3+4+...+47+48=1175