# Thread: Supposedly "well-known" math problem

1. ## Supposedly "well-known" math problem

Hi

Could someone please show me how to do (ii) of the question? I got that e^(Sn) > Rn BUT I have no idea how to prove the Rn < 1+ Sn.

$R_n - S_n - 1 > 0$
See what happens when you expand $R_n - S_n - 1$ for n = 2