Aysmptotic Analysis Proof

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Not sure how to prove the following. Link to Equation

$$e^x=\sum_{i=0}^{m-1}\frac{x^i}{i!}+\Theta(x^m)\,,$$ for all $m=1,2,\cdots$

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If $m=1$ this is $e^x = 1+\Theta(x)$ which is not true for large $x$.

You need a restriction such as $|x| \le 1$.