Questions: Sketch a graph of f and use it to make a conjecture about the values of f(a), lim x→a* f(x), lim x→a+ f(x), and lim x→a f(x), or state if they do not exist.
f(x) = (x^2-100)/(x+10), a = -10
Make a conjecture about the value of f(-10). Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The value of f(-10) = (Type an integer or a decimal)
B. The value of f(-10) does not exist.
Make a conjecture about the value of lim x→-10° 100. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The limit exists. lim x→-10° (x^2-100)/(x+10) = (Type an integer or a decimal)
B. The limit does not exist.
Transcript text: Sketch a graph of $f$ and use it to make a conjecture about the values of $f(a)$, $\lim _{x \rightarrow a^{*}} f(x)$, $\lim _{x \rightarrow a^{+}} f(x)$, and $\lim _{x \rightarrow a} f(x)$, or state if they do not exist.
\[
f(x)=\frac{x^{2}-100}{x+10}, a=-10
\]
Make a conjecture about the value of $\mathrm{f}(-10)$. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The value of $f(-10)=$ $\square$ (Type an integer or a decimal)
B. The value of $\mathrm{f}(-10)$ does not exist.
Make a conjecture about the value of $\lim _{x \rightarrow-10^{\circ}} 100$. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The limit exists. $\lim _{x \rightarrow-10^{\circ}} \frac{x^{2}-100}{x+10}=$ $\square$ (Type an integer or a decimal)
B. The limit does not exist.
Solution
Solution Steps
Step 1: Identify the function and the value of 'a'
The given function is \( f(x) = \frac{x^2 - 100}{x + 10} \) and \( a = -10 \).
Step 2: Simplify the function
Simplify \( f(x) \) by factoring the numerator:
\[ x^2 - 100 = (x + 10)(x - 10) \]
So,
\[ f(x) = \frac{(x + 10)(x - 10)}{x + 10} \]
For \( x \neq -10 \), this simplifies to:
\[ f(x) = x - 10 \]
Step 3: Sketch the graph of the function
The simplified function \( f(x) = x - 10 \) is a linear function with a slope of 1 and a y-intercept of -10. However, at \( x = -10 \), the function is undefined. The correct graph should be a line with a hole at \( x = -10 \).