Polynomial approximation of e to the x

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 2K views
tmt1
Messages
230
Reaction score
0
I am examining the polynomial approximation for $e^x$ near $x = 2$.

From Taylor's theorem:

$$e^x = \sum_{n = 0}^{\infty} \frac{e^2}{n!} (x - 2)^n + \frac{e^z}{(N + 1)! } (x - 2)^{N - 1}$$

Now, I don't get the next part:

We need to keep $\left| (x - 2)^{N + 1} \right|$ in check so we can specify $\left| (x - 2) \right| \le 1$ so $x \in [1,3]$.
 
Physics news on Phys.org
The question is unclear, could you please rephrase it ?