Questions: Which of the following is/are signified by the limit as x approaches a of f(x) equals infinity?
- This means that f(a) equals infinity
- The value of x goes out to infinity, when it gets close to a.
- As x approaches a, the value of f(x) increases without bound.
- The limit exists and equals infinity.
- The value of fk(x) becomes infinite when x approaches a.
Transcript text: Which of the following is/are signified by $\lim _{x \rightarrow a} f(x)=\infty$ ?
This means that $f(a)=\infty$
The value of $x" goes out to infinity, when it gets close to $a$.
As $x$ approaches $a$, the value of $f(x)$ increases without bound.
The limit exists and equals infinity.
The value of $f_{k}(x)$ becomes infinite when $x$ approaches $a$.
Solution
Solution Steps
Step 1: Understanding the Problem
The problem involves evaluating the limit of a function \( f(x) \) as \( x \) approaches a certain value. Specifically, it asks to determine the implications of the given limits.
Step 2: Analyzing the Given Information
The given information states:
\( \lim_{x \to a} f(x) = 3 \)
\( \lim_{x \to a^+} f(x) = 3 \)
\( \lim_{x \to a^-} f(x) = 3 \)
Step 3: Drawing Conclusions from the Limits
From the given information, we can conclude that:
The limit of \( f(x) \) as \( x \) approaches \( a \) from the left (\( x \to a^- \)) is 3.
The limit of \( f(x) \) as \( x \) approaches \( a \) from the right (\( x \to a^+ \)) is 3.
Therefore, the overall limit of \( f(x) \) as \( x \) approaches \( a \) is 3.
Final Answer
The given information implies that \( \lim_{x \to a} f(x) = 3 \).