Math Problem Statement

With the red graph being f(x) and the blue graph g(x), find limx→2^− [f(x)+g(x)]

With the red graph being f(x) and the blue graph g(x), find lim*x*→2^− [*f*(*x*)+*g*(*x*)]

Solution

To solve limx2[f(x)+g(x)]\lim_{x \to 2^-} [f(x) + g(x)], we analyze the left-hand limits of the given functions f(x)f(x) (red graph) and g(x)g(x) (blue graph) as xx approaches 22 from the left.

  1. For f(x)f(x) as x2x \to 2^-:

    • Observe the red graph. As xx approaches 22 from the left, the yy-coordinate (function value) of f(x)f(x) approaches 11.
    • Thus, limx2f(x)=1\lim_{x \to 2^-} f(x) = 1.
  2. For g(x)g(x) as x2x \to 2^-:

    • Observe the blue graph. As xx approaches 22 from the left, the yy-coordinate of g(x)g(x) approaches 11.
    • Thus, limx2g(x)=1\lim_{x \to 2^-} g(x) = 1.
  3. Combine the limits: limx2[f(x)+g(x)]=limx2f(x)+limx2g(x)=1+1=2.\lim_{x \to 2^-} [f(x) + g(x)] = \lim_{x \to 2^-} f(x) + \lim_{x \to 2^-} g(x) = 1 + 1 = 2.

Final Answer:

limx2[f(x)+g(x)]=2.\lim_{x \to 2^-} [f(x) + g(x)] = 2.

Let me know if you'd like further clarification or additional steps!

Related Questions:

  1. What is limx2+[f(x)+g(x)]\lim_{x \to 2^+} [f(x) + g(x)]?
  2. Analyze the continuity of f(x)f(x) and g(x)g(x) at x=2x = 2.
  3. Find limx1[f(x)g(x)]\lim_{x \to 1^-} [f(x) - g(x)].
  4. Explore the behavior of f(x)f(x) and g(x)g(x) at x=3x = 3.
  5. What is the significance of a one-sided limit in the context of these graphs?

Tip: Always examine the graph closely for jump discontinuities or holes when calculating one-sided limits.

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Math Problem Analysis

Mathematical Concepts

Limits
One-Sided Limits
Graphical Analysis

Formulas

lim(x→c) [f(x) + g(x)] = lim(x→c) f(x) + lim(x→c) g(x)

Theorems

Limit Laws

Suitable Grade Level

High School (Grades 10-12) / Early College