Math Problem Statement

For the function f graphed below, find the following limits:

  1. \displaystyle \lim_{x \to -1^{-}}f(x) = help (limits)

  2. \displaystyle \lim_{x \to -1^{+}}f(x) =

  3. \displaystyle \lim_{x \to 1} f(x) =

  4. \displaystyle \lim_{x \to \infty}f(x) =

  5. \displaystyle \lim_{x \to -\infty}f(x) =

For the function f graphed below, find the following limits: 1. lim(x → -1^-) f(x) 2. lim(x → -1^+) f(x) 3. lim(x → 1) f(x) 4. lim(x → ∞) f(x) 5. lim(x → -∞) f(x)

Solution

Let's go through the limits one by one, based on the graph provided.

  1. limx1f(x)\lim_{x \to -1^{-}} f(x):

    • This represents the left-hand limit as xx approaches 1-1 from the left. From the graph, as xx approaches 1-1 from the left, the function is oscillating but remains bounded around 00. Thus: limx1f(x)=0\lim_{x \to -1^{-}} f(x) = 0
  2. limx1+f(x)\lim_{x \to -1^{+}} f(x):

    • This represents the right-hand limit as xx approaches 1-1 from the right. From the graph, as xx approaches 1-1 from the right, the function diverges towards -\infty. Therefore: limx1+f(x)=\lim_{x \to -1^{+}} f(x) = -\infty
  3. limx1f(x)\lim_{x \to 1} f(x):

    • This is the two-sided limit as xx approaches 11. As xx approaches 11, the function seems to diverge towards \infty, implying that there is a vertical asymptote at x=1x = 1. Thus: limx1f(x)=\lim_{x \to 1} f(x) = \infty
  4. limxf(x)\lim_{x \to \infty} f(x):

    • As xx approaches \infty, the function settles towards a horizontal asymptote. From the graph, the function appears to approach 00 as xx increases. Hence: limxf(x)=0\lim_{x \to \infty} f(x) = 0
  5. limxf(x)\lim_{x \to -\infty} f(x):

    • As xx approaches -\infty, the function oscillates with a decaying amplitude, and it seems to approach 00. Therefore: limxf(x)=0\lim_{x \to -\infty} f(x) = 0

Summary:

  • limx1f(x)=0\lim_{x \to -1^{-}} f(x) = 0
  • limx1+f(x)=\lim_{x \to -1^{+}} f(x) = -\infty
  • limx1f(x)=\lim_{x \to 1} f(x) = \infty
  • limxf(x)=0\lim_{x \to \infty} f(x) = 0
  • limxf(x)=0\lim_{x \to -\infty} f(x) = 0

Would you like further details or explanations on any of these limits?

Here are five related questions:

  1. What is the difference between a left-hand limit and a right-hand limit?
  2. How can we identify a vertical asymptote from a function's graph?
  3. What conditions lead to an infinite limit as xx approaches a certain value?
  4. What is the significance of a horizontal asymptote in a function?
  5. Can a function have multiple vertical asymptotes? Why or why not?

Tip: Always check the behavior of the function from both sides of a point when evaluating limits, especially near vertical asymptotes!

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Math Problem Analysis

Mathematical Concepts

Limits
Asymptotes
Oscillatory Behavior

Formulas

lim(x → a^-) f(x)
lim(x → a^+) f(x)
lim(x → ∞) f(x)

Theorems

Limit Theorems
Vertical Asymptotes
Horizontal Asymptotes

Suitable Grade Level

Grades 10-12