Understanding Limits and Absolute Values in Calculus
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Questions and Answers

What is the definition of removable discontinuity?

  • Exists at the point (correct)
  • Limit is infinite
  • Limit exists
  • Limit does not exist
  • Which condition characterizes an essential discontinuity?

  • Limit exists
  • Limit does not exist (correct)
  • Limit is infinite
  • Function is continuous
  • In the context of discontinuities, what is meant by one-sided limits?

  • Limits that sum to zero
  • Limits with infinite values
  • Limits that are equal
  • Limits approaching from one direction (correct)
  • What condition must be met for a discontinuity to be removable?

    <p>Function value at the point exists</p> Signup and view all the answers

    When discussing discontinuities, what does it mean for a function to diverge?

    <p>Function value approaches infinity</p> Signup and view all the answers

    What is the domain of the function 𝑟𝑟2(𝑥𝑥)?

    <p>[3, +∞)</p> Signup and view all the answers

    If 𝑟𝑟2(𝑥𝑥) is in the domain of 𝑟𝑟1(𝑥𝑥), what is the relationship between 𝑟𝑟2(𝑥𝑥) and 𝑘𝑘?

    <p>𝜋𝜋2𝑥𝑥 − 3 ≠ 𝑘𝑘𝑘𝑘 +</p> Signup and view all the answers

    What type of functions are linear functions?

    <p>Real-valued functions of the form 𝑓(𝑥) = 𝑚 + 𝑏</p> Signup and view all the answers

    What is the degree of a polynomial function denoted as deg(𝑓)?

    <p>The highest power of 𝑥 in the function</p> Signup and view all the answers

    What kind of functions are defined by the greatest integer function?

    <p>Step functions</p> Signup and view all the answers

    If $\lim_{x \to b} g(x) = c$, then there exists $\delta_1 > 0$ such that if $0 < |x - b| < \delta_1$, then:

    <p>$|g(x) - c| &lt; 2c$</p> Signup and view all the answers

    What notation represents the greatest integer less than or equal to 𝑥?

    <p>[x]</p> Signup and view all the answers

    If the limit of $g(x)$ as $x$ approaches 0 is a constant $c$, what can be concluded about the limit of $[f(x) + g(x)]$ as $x$ approaches $b$?

    <p>It will be $+ fty$ if the limit of $f(x)$ is $+ fty$.</p> Signup and view all the answers

    If $\lim_{x \to b} f(x) = 0$, then there exists a $\delta_2 > 0$ such that if $0 < |x - b| < \delta_2$, then:

    <p>$1 &lt; f(x) &lt; 2N$</p> Signup and view all the answers

    In the case where $r$ is an odd number, what is the limit as $x$ approaches 0 of $f(x)$ when $f(x) = x^r$?

    <p>$+ fty$</p> Signup and view all the answers

    For which type of functions does Theorem 1.11 provide conclusions about the limits of the sum of two functions?

    <p>When one function has a limit at a constant value.</p> Signup and view all the answers

    When defining $\delta = \min(\delta_1, \delta_2)$, if $0 < |x - b| < \delta$, then:

    <p>$g(x) &gt; 2N$</p> Signup and view all the answers

    What is the limit of $f(x) \cdot g(x)$ as $x$ approaches $b$?

    <p>$+\infty$</p> Signup and view all the answers

    What happens to the limit of $[f(x) + g(x)]$ as $x$ approaches $b$ if the limit of $f(x)$ is $- fty$ according to Theorem 1.11?

    <p>It will be $- fty$.</p> Signup and view all the answers

    What is the limit of $-f(x)$ as $x$ approaches $b$?

    <p>$0$</p> Signup and view all the answers

    If a function $f(x)$ equals $x^r$ and $r$ is even, what can be said about the limit of $f(x)$ as $x$ approaches 0?

    <p>$0$</p> Signup and view all the answers

    What is the limit as $x$ approaches 0 of $g(x)$ when the limit of $f(x)$ is a constant according to Theorem 1.11?

    <p>$0$</p> Signup and view all the answers

    If $f(x) \to 0$ through positive values, what can be deduced about the function's behavior?

    <p>$f(x)$ oscillates between negative and positive values</p> Signup and view all the answers

    If the limit of 𝑓𝑓(𝑥𝑥) as 𝑥𝑥 approaches 𝑏𝑏 is written as lim 𝑓𝑓(𝑥𝑥) = −∞, what does this mean?

    <p>As 𝑥𝑥 gets closer to 𝑏𝑏, 𝑓𝑓(𝑥𝑥) decreases without bound.</p> Signup and view all the answers

    In the theorem presented, if the limit of 𝑔𝑔(𝑥𝑥) as 𝑥𝑥 approaches 𝑏𝑏 is a constant 𝑐𝑐 not equal to 0, what is the relationship between 𝑐𝑐 and the limits of 𝑓𝑓(𝑥𝑥) and 𝑔𝑔(𝑥𝑥)?

    <p>If 𝑐𝑐 &gt; 0 and 𝑓𝑓(𝑥𝑥) approaches 0 through positive values, then the limit of 𝑔𝑔(𝑥𝑥) is positive infinity.</p> Signup and view all the answers

    Which scenario would lead to the limit lim = +∞ as 𝒙 approaches 𝒃?

    <p>If the function 𝒇(𝒙) approaches 0 through positive values and the constant is positive.</p> Signup and view all the answers

    In the context of limits, what does it mean when a function 'decreases without bound'?

    <p>The function approaches negative infinity or decreases indefinitely as the input approaches a specific value.</p> Signup and view all the answers

    If lim 𝒇(𝒙) = 0 and lim 𝒈(𝒙) = 𝒄, where 𝒄 is a non-zero constant, what can be concluded according to Theorem 1.9?

    <p>If the constant is positive and 𝒈(𝒙) approaches 0 through positive values, then lim = +∞.</p> Signup and view all the answers

    What does it imply if a function has a limit of +∞ as its input approaches a certain value?

    <p>The function will increase indefinitely as its input gets closer to that value.</p> Signup and view all the answers

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