The functions $u$ and $w$ are defined as follows.
$\begin{array}{l} u (x) = - x - 1 \\ w (x) = x^{2} + 2 \end{array}$
Find the value of $u (w (3))$ .

Answer

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Answer

$- 12$ is the final answer

Steps

Step 1 ：Define the functions $u (x) = - x - 1$ and $w (x) = x^{2} + 2$

Step 2 ：Find the value of $w (3)$ by substituting $x = 3$ into the function $w (x)$

Step 3 ：Substitute the value of $w (3)$ into the function $u (x)$ to find the value of $u (w (3))$

Step 4 ：Calculate the final value of $u (w (3))$

Step 5 ： $- 12$ is the final answer