Math Problem Statement

Consider the following information about f(x): lim x→2⁻ f(x) = -∞, lim x→2⁺ f(x) = ∞, lim x→-∞ f(x) = 2, lim x→∞ f(x) = 2, lim x→3⁻ f(x) = 5, lim x→3⁺ f(x) = 5, f(3) = undefined, f(1) = 0, f(0) = 1. Sketch the graph indicating all asymptotes, intercepts, and discontinuities.

Solution

The problem provides several key limits and function values for f(x)f(x). Let's break it down:

  1. Behavior around x=2x = 2:

    • limx2f(x)=\lim_{x \to 2^-} f(x) = -\infty indicates a vertical asymptote at x=2x = 2, where the function goes to -\infty as xx approaches 2 from the left.
    • limx2+f(x)=\lim_{x \to 2^+} f(x) = \infty indicates the function goes to \infty as xx approaches 2 from the right. So, there's a jump discontinuity at x=2x = 2.
  2. Behavior as xx \to -\infty:

    • limxf(x)=2\lim_{x \to -\infty} f(x) = 2 implies there is a horizontal asymptote at y=2y = 2 as xx \to -\infty.
  3. Behavior as xx \to \infty:

    • limxf(x)=2\lim_{x \to \infty} f(x) = 2 suggests another horizontal asymptote at y=2y = 2 as xx \to \infty.
  4. Behavior around x=3x = 3:

    • limx3f(x)=5\lim_{x \to 3^-} f(x) = 5 and limx3+f(x)=5\lim_{x \to 3^+} f(x) = 5, which means the function approaches 5 from both sides of x=3x = 3, but f(3)f(3) is undefined. This implies a hole at x=3x = 3.
  5. Function values:

    • f(1)=0f(1) = 0 gives a point at (1,0)(1, 0), which is an x-intercept.
    • f(0)=1f(0) = 1 gives another point at (0,1)(0, 1).

Sketching the Graph

Based on this information, the graph would exhibit the following features:

  • A vertical asymptote at x=2x = 2.
  • A horizontal asymptote at y=2y = 2 for both xx \to -\infty and xx \to \infty.
  • A hole at x=3x = 3, y=5y = 5.
  • Intercepts at (1,0)(1, 0) and (0,1)(0, 1).

Would you like more details on the sketching process, or clarification on specific parts?

Here are five related questions:

  1. How do vertical asymptotes influence the graph of a function?
  2. What is the significance of horizontal asymptotes in behavior as xx \to \infty and xx \to -\infty?
  3. How do you interpret jump discontinuities like the one at x=2x = 2?
  4. What is the difference between a removable discontinuity (like the hole at x=3x = 3) and a non-removable one?
  5. How does knowing f(1)=0f(1) = 0 and f(0)=1f(0) = 1 help in plotting points?

Tip: When sketching graphs of functions, always start with identifying the behavior at critical points like asymptotes, intercepts, and discontinuities.

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Math Problem Analysis

Mathematical Concepts

Limits
Asymptotes
Discontinuities
Behavior of Functions

Formulas

Limit notation
Asymptote determination

Theorems

Limit Theorem
Asymptote Theorem
Discontinuity Identification

Suitable Grade Level

Grades 11-12 (Pre-Calculus/Calculus)