IDNLearn.com offers a unique blend of expert answers and community insights. Our platform offers comprehensive and accurate responses to help you make informed decisions on any topic.

Suppose that the functions [tex]h[/tex] and [tex]g[/tex] are defined as follows.

[tex]\[
\begin{array}{l}
h(x)=x+3 \\
g(x)=(x+6)(x-4)
\end{array}
\][/tex]

(a) Find [tex]\left(\frac{h}{g}\right)(5)[/tex].

(b) Find all values that are NOT in the domain of [tex]\frac{h}{g}[/tex]. If there is more than one value, separate them with commas.

(a) [tex]\left(\frac{h}{g}\right)(5) = \square[/tex]

(b) Value(s) that are NOT in the domain of [tex]\frac{h}{g}[/tex]: [tex]\square[/tex]


Sagot :

Sure! Let's go through the problem step by step.

### Part (a): Find [tex]\(\left(\frac{h}{g}\right)(5)\)[/tex]

1. Evaluate [tex]\(h(5)\)[/tex]:
[tex]\[ h(x) = x + 3 \][/tex]
Substituting [tex]\(x = 5\)[/tex]:
[tex]\[ h(5) = 5 + 3 = 8 \][/tex]

2. Evaluate [tex]\(g(5)\)[/tex]:
[tex]\[ g(x) = (x + 6)(x - 4) \][/tex]
Substituting [tex]\(x = 5\)[/tex]:
[tex]\[ g(5) = (5 + 6)(5 - 4) = 11 \cdot 1 = 11 \][/tex]

3. Calculate [tex]\(\left(\frac{h}{g}\right)(5)\)[/tex]:
[tex]\[ \left(\frac{h}{g}\right)(5) = \frac{h(5)}{g(5)} = \frac{8}{11} \approx 0.7272727272727273 \][/tex]

Therefore, [tex]\(\left(\frac{h}{g}\right)(5) = \frac{8}{11} \approx 0.7272727272727273\)[/tex].

### Part (b): Find all values that are NOT in the domain of [tex]\(\frac{h}{g}\)[/tex]

To find the values that are NOT in the domain of [tex]\(\frac{h}{g}\)[/tex], we need to determine where the function [tex]\(g(x)\)[/tex] is equal to zero because division by zero is undefined.

1. Solve [tex]\(g(x) = 0\)[/tex]:
[tex]\[ g(x) = (x + 6)(x - 4) \][/tex]
Set the expression equal to zero:
[tex]\[ (x + 6)(x - 4) = 0 \][/tex]
This product is zero when either factor is zero:
[tex]\[ x + 6 = 0 \quad \text{or} \quad x - 4 = 0 \][/tex]
Solving these equations gives:
[tex]\[ x = -6 \quad \text{or} \quad x = 4 \][/tex]

Thus, the values that are NOT in the domain of [tex]\(\frac{h}{g}\)[/tex] are [tex]\(-6\)[/tex] and [tex]\(4\)[/tex].

### Final Answers:
(a) [tex]\(\left(\frac{h}{g}\right)(5) = \frac{8}{11} \approx 0.7272727272727273\)[/tex]

(b) Values that are NOT in the domain of [tex]\(\frac{h}{g}\)[/tex]: [tex]\(-6, 4\)[/tex]
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Find clear answers at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.