Obrigatória
Nota: 1
Dada a funçāo de $\mathbb{R} \rightarrow \mathbb{R}:$
\[
f(x)=\left\{\begin{array}{c}
2 x-1, \text { se } x \geq-5 \\
-x+1, \text { se } x< -5
\end{array}\right\}
\]
Determine $f(-4)$ :
7
3
5
$-9$
$-7$

Answer

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Answer

$\boxed{-9}$

Steps

Step 1 ：Determine the value of the function f(x) when x = -4. Since -4 is greater than or equal to -5, we will use the first part of the function definition: $2x - 1$.

Step 2 ：Substitute x = -4 into the function: $f(-4) = 2(-4) - 1$

Step 3 ：Calculate the value: $f(-4) = -8 - 1$

Step 4 ：Simplify the expression: $f(-4) = -9$

Step 5 ：$\boxed{-9}$

ObrigatóriaNota: 1Dada a funçāo de $\mathbb{R} \rightarrow \mathbb{R}:$\[f(x)=\left\{\begin{array}{c}2 x-1, \text { se } x \geq-5 \\-x+1, \text { se } x< -5\end{array}\right\}\]Determine $f(-4)$ :735$-9$$-7$

Answer

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Obrigatória
Nota: 1
Dada a funçāo de $\mathbb{R} \rightarrow \mathbb{R}:$
\[
f(x)=\left\{\begin{array}{c}
2 x-1, \text { se } x \geq-5 \\
-x+1, \text { se } x< -5
\end{array}\right\}
\]
Determine $f(-4)$ :
7
3
5
$-9$
$-7$