I am studying for an examination and this is a problem from a few years back:
What is the best approximation, in the inf-norm on the interval $[-1,1]$, of $\cosh(x)$ by a quadratic polynomial?
Any tips or direction would be great!
2026-03-27 01:00:12.1774573212
What is the best approximation, in the inf-norm on the interval $[-1,1]$, of $\cosh(x)$ by a quadratic polynomial?
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