Problem 11, Power Series as Functions IMath assignment.

f[x_]:=Log[x]
f[9.0]
t6[x_]:=Log[9]+Sum[(-1)^n(x-9)^(n+1)/(9^(n+1)(n+1)),{n,0,10}]
Plot[{Log[x],t6[x]},{x,0,16}]