Math Problem Statement
draw the graph of a function f which statisfies all of the given conditions. f(2)=-1, lim x->2 f(x)=2.5, lim x->-3^+ f(x)=0, and lim x->-3^- f(x)=2
Solution
The conditions given describe the behavior of the function at specific points, which means we can sketch a graph that satisfies these criteria:
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: This indicates the function has the value at , so the graph passes through the point .
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: The limit of the function as approaches is . This implies that the function's value at is a discontinuity since . The graph should have a jump discontinuity at .
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: As approaches from the right, the function approaches . This indicates the function smoothly approaches the value from the right-hand side of .
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: As approaches from the left, the function approaches . This implies a jump discontinuity at .
The graph will show two jump discontinuities: one at and another at .
Let me create a plot illustrating this. matplotlib.pyplot as plt import numpy as np
Define points to visualize the conditions
x1 = np.linspace(-4, -3, 500) # Left of x = -3 x2 = np.linspace(-3, -2, 500) # Right of x = -3 x3 = np.linspace(1.5, 2, 500) # Left of x = 2 x4 = np.linspace(2, 2.5, 500) # Right of x = 2
Define the function behavior based on the conditions
y1 = 2 * np.ones_like(x1) # Approaching 2 from the left of -3 y2 = 0 * np.ones_like(x2) # Approaching 0 from the right of -3 y3 = 2.5 * np.ones_like(x3) # Approaching 2.5 from the left of 2 y4 = 2.5 * np.ones_like(x4) # Approaching 2.5 from the right of 2
Create the plot
plt.figure(figsize=(8, 6)) plt.plot(x1, y1, 'b-', label=r'$\lim_{{x \to -3^-}} f(x) = 2$') plt.plot(x2, y2, 'r-', label=r'$\lim_{{x \to -3^+}} f(x) = 0$') plt.plot(x3, y3, 'g-', label=r'$\lim_{{x \to 2}} f(x) = 2.5$ (Left of 2)') plt.plot(x4, y4, 'g-', label='nolegend') # Continue from the right of 2
Add the discrete points for f(2) = -1
plt.scatter([2], [-1], color='purple', zorder=5, label=r'$f(2) = -1$') plt.scatter([-3], [2], color='blue', zorder=5, label='Jump at x = -3 (Left Limit)') plt.scatter([-3], [0], color='red', zorder=5, label='Jump at x = -3 (Right Limit)')
Formatting the plot
plt.axvline(x=-3, color='k', linestyle='--', linewidth=0.7, label='x = -3') plt.axvline(x=2, color='k', linestyle='--', linewidth=0.7, label='x = 2') plt.axhline(0, color='black', linewidth=0.7) plt.title("Graph of the Function f(x)") plt.xlabel("x") plt.ylabel("f(x)") plt.legend() plt.grid() plt.show()The graph above represents a function that satisfies all the given conditions. Key features include:
- A jump discontinuity at with and .
- A jump discontinuity at with and .
Let me know if you need further details, or have other questions!
Here are 5 related questions for further exploration:
- What is the formal definition of a jump discontinuity?
- How do limits relate to the continuity of a function?
- Can have a point of continuity near or ?
- What is the significance of compared to ?
- How would this graph change if were equal to ?
Tip: When dealing with discontinuities, always evaluate one-sided limits to fully understand the behavior of the function.
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Math Problem Analysis
Mathematical Concepts
Limits
Continuity
Discontinuities
Graphing Functions
Formulas
lim_{x \to a} f(x) = L (Definition of Limit)
f(a) = c (Function Evaluation)
Jump Discontinuity: lim_{x \to a^-} f(x) \neq lim_{x \to a^+} f(x)
Theorems
Definition of Limits
Concept of Jump Discontinuity
Suitable Grade Level
Grades 10-12