Question

sa se afle cea mai mare valaore a functiei f(x)=cosx +3 ,f:R-R

Answer 1

$f: \mathbb{R} \rightarrow \mathbb{R}, f(x) = \cos(x) + 3$

$-1 \leq \cos(x) \leq 1 \implies 2 \leq \cos(x) + 3 \leq 4 \implies \boxed{\text{max}_{x \in \mathbb{R}}\{f(x)\} = 4}$