Fonksiyonlar

2.f(x+1)-2f(x)=3x
f(x+1)-f(x)=3x/2
x yerine degerler veriyoruz
f(2)-f(1)=3/2
f(3)-f(2)=3
f(4)-f(3)=9/2
….
f(8)-f(7)=21/2
Denklemleri toplayalim
f(8)-f(1)=(3/2)+3+(9/2)+6+(15/2)+9+(21/2)=
18+ 48/2=18+24=42
f(8)-2=42
f(8)=44