Questions: Suppose that the functions g and f are defined as follows.
g(x)=x-1
f(x)=(x+3)(x+1)
(a) Find (g/f)(-6)
(b) Find all values that are NOT in the domain of g/f.
If there is more than one value, separate them with commas.
(a) (g/f)(-6)=
(b) Value(s) that are NOT in the domain of g/f :
Transcript text: Suppose that the functions $g$ and $f$ are defined as follows.
\[
\begin{array}{l}
g(x)=x-1 \\
f(x)=(x+3)(x+1)
\end{array}
\]
(a) Find $\left(\frac{g}{f}\right)(-6)$
(b) Find all values that are NOT in the domain of $\frac{g}{f}$.
If there is more than one value, separate them with commas.
(a) $\left(\frac{g}{f}\right)(-6)=$ $\square$
(b) Value(s) that are NOT in the domain of $\frac{g}{f}$ : $\square$
Solution
Solution Steps
Step 1: Evaluate the Quotient at a Specific Point \(x_0\)
To find \(\left(\frac{f}{g}\right)(x_0)\), substitute \(x_0 = -6\) into both \(f(x)\) and \(g(x)\) and compute the quotient.
Given \(f(x) = x - 1\) and \(g(x) = (x + 1)*(x + 3)\),
\(f(-6) = -7\) and \(g(-6) = 15\).
Thus, \(\left(\frac{f}{g}\right)(-6) = -0.467\).
Step 2: Determine the Domain of \(
rac{f}{g}\)
To find all values not in the domain of \(
rac{f}{g}\), solve the equation \(g(x) = 0\).
The values of \(x\) for which \(g(x) = 0\) are [-3, -1], which are excluded from the domain of \(
rac<function g at 0xffff7821fa30><function f at 0xffff7821f010>\).
Final Answer:
The quotient \(\left(\frac{f}{g}\right)(-6)\) is -0.467, and the values excluded from the domain of \(
rac<function g at 0xffff7821fa30><function f at 0xffff7821f010>\) are [-3, -1].