Let xyz≠0
and define f(n)=xn+yn+zn ,
g(n)=x-n+y-n+z-n
If f(1)=1
f(2)=2
f(3)=3
then g(6) = ? f(18) = ?
(try to find the most convenient way to the question)
Let xyz≠0
and define f(n)=xn+yn+zn ,
g(n)=x-n+y-n+z-n
If f(1)=1
f(2)=2
f(3)=3
then g(6) = ? f(18) = ?
(try to find the most convenient way to the question)