Question

gente preciso de help é prova
​

Answer 1

Resposta:

a)

$\Large \boxed{ \green{D = \{x \in \mathbb{R}| - 6 \leqslant x \leqslant6 \} }}\\ \\ \Large \boxed{ \green{Im{(f)} = \{x \in\mathbb{R} | - 2 \leqslant x \leqslant 4 \}}}$

b)

$\Large\boxed{ \green{[ 3,5]}}\\\\ ou \\\\ \Large \boxed{\green{\{x\in \mathbb{R}|3\leqslant x \leqslant 5\} }}$

c)

$\Large \: \boxed{ \green{f( - 3) = - 2}}$

d)

$f( - 6) + f(5) - f(6) = \\ \\ = 2 + 2 - 4 \\ \\ = 4 - 4 \\ \\ \Large\: = \boxed{ \green{ 0}}$

$\Large \boxed{ \underline{ \bf \: \blue{Bons \: Estudos!}}} \\ \\ \large \boxed{ \underline{ \bf \: 25/05/2021}}$