Math Problem Statement

Use the graph to find the indicated limits.

Step 1 of 3 : Find limx→−2−f(x). x −10 −5 5 10 y −10 −5 5 10 Cartesian Coordinate PlaneThe horizontal axis is labeled with x. The horizontal axis contains 21 grid lines, starts at -10, and ends at 10; and the axis is labeled with the values: -10, -5, 5, 10.The vertical axis is labeled with y. The vertical axis contains 21 grid lines, starts at -10, and ends at 10; and the axis is labeled with the values: -10, -5, 5, 10.Piecewise GraphThe graph is made up of a set of different curves, defined over the 2 regions,for the curves: Left Curve and Right Curve.Region 1The region of the coordinate plane containing horizontal values to the left of the value 2 units left of the origin and all vertical values.Left CurveA solid curve is drawn with the equation f(x)=−2x+2−1.Vertical AsymptoteA dashed vertical line segment is drawn 2 units left of the vertical axis.Region 2The region of the coordinate plane containing horizontal values to the right of the value 2 units left of the origin and all vertical values.Right CurveA solid curve is drawn with the equation f(x)=2x+2−2.Vertical AsymptoteA dashed vertical line segment is drawn 2 units left of the vertical axis.

Solution

To find the limit limx2f(x)\lim_{{x \to -2^-}} f(x), we need to analyze the behavior of the function as xx approaches 2-2 from the left side, denoted by the superscript ^-. Based on your description of the graph and the equations of the curves, we can follow these steps:

Step 1: Identify the equation of the curve to the left of x=2x = -2.

The graph in Region 1, which is the left region, corresponds to the function f(x)=2x+21f(x) = -2x + 2 - 1. This equation defines the behavior of the function as xx approaches 2-2 from the left side.

Step 2: Evaluate the limit as xx approaches 2-2 from the left.

We will substitute x=2x = -2 into the equation f(x)=2x+21f(x) = -2x + 2 - 1:

f(x)=2(2)+21=4+21=5f(x) = -2(-2) + 2 - 1 = 4 + 2 - 1 = 5

Conclusion:

As xx approaches 2-2 from the left (x2x \to -2^-), the value of f(x)f(x) approaches 55.

Thus, limx2f(x)=5\lim_{{x \to -2^-}} f(x) = 5.

Would you like details on how to find other types of limits or clarify this one?


Here are 5 related questions for further practice:

  1. What is limx2+f(x)\lim_{{x \to -2^+}} f(x) from the graph?
  2. What is limx2f(x)\lim_{{x \to 2}} f(x) if there is a vertical asymptote?
  3. How do we find limx0f(x)\lim_{{x \to 0}} f(x) if the function is continuous at x=0x = 0?
  4. How does the behavior of a graph near a vertical asymptote affect limits?
  5. What is the difference between one-sided and two-sided limits?

Tip: Always pay attention to whether you are approaching a point from the left (^-) or from the right (+^+) when finding one-sided limits.

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Math Problem Analysis

Mathematical Concepts

Limits
Piecewise Functions
One-Sided Limits
Asymptotes

Formulas

f(x) = -2x + 2 - 1
Limit: lim(x→−2−) f(x)

Theorems

Limit Theorem
Asymptote Behavior

Suitable Grade Level

Grades 11-12