Wyznacz f oraz a Dawid: Założenia f: N → R m,n ∊ N a ∊ R f(n+m) = f(m) + f(n) + a f(2) = 10 f(20) = 118

ABC: f(2n)=f(n+n)=2f(n)+a f(3n)=f(n+2n)=3f(n)+2a ................................. f(10n)=10f(n)+9a 118=10*10+9a 18=9a 2=a dalej sam