📘 approximation theory

1. **Problem statement:** Find the closest degree 3 polynomial approximation to the function $e^x$ on the interval $[0,1]$. 2. **Method:** The best polynomial approximation in the

1. **Problem Statement:** You want to verify if the step involving inequalities (5.3) to (5.7) correctly proves the lemma about the error bound for derivatives of the function appr