Something new? Hmmmmm.......ok

How about an easy function problem.
And then a harder sequence problem.

1. If f(x)=9x+1 and g(x)=x^2. Find all values of x which satisfie f[g(x)]=g[f(x)]



and ....



2. If p and q belong to positive integers such that p/q=1+1/2-2/3+1/4+1/5-2/6+1/7+1/8 ... +1/478+1/479-2/480. Prove p is divisible by 641.