Math Problem Statement

Question content area top Part 1 Construct a table and find the indicated limit. If ​h(x)equals=StartFraction StartRoot x EndRoot plus 2 Over x minus 2 EndFraction x+2 x−2​, then find ModifyingBelow lim With x right arrow 2 h left parenthesis x right parenthesislimx→2h(x). Question content area bottom Part 1 Complete the table below. x 1.91.9 1.991.99 1.9991.999 2.0012.001 2.012.01 2.12.1

Solution

We are asked to evaluate the limit of the function

h(x)=x+2x2h(x) = \frac{\sqrt{x} + 2}{x - 2}

as x2x \to 2.

Part 1: Understanding the Problem

We are trying to find limx2h(x)\lim_{x \to 2} h(x). Direct substitution of x=2x = 2 into h(x)h(x) leads to an indeterminate form, because the denominator becomes 0. Therefore, we'll use a table of values to explore the behavior of the function as xx approaches 2 from both sides.

Part 2: Constructing a Table

We will evaluate h(x)h(x) for values of xx approaching 2 from both the left (values less than 2) and the right (values greater than 2). The values we will use are: 1.9, 1.99, 1.999, 2.001, 2.01, 2.1.

Let's now calculate h(x)h(x) for each value of xx.Here are the calculated values of h(x)h(x) for the given values of xx:

xxh(x)h(x)
1.9-33.784
1.99-341.067
1.999-3413.860
2.0013414.567
2.01341.774
2.134.491

Part 3: Analyzing the Table

As xx approaches 2 from the left (values less than 2), h(x)h(x) becomes increasingly negative. As xx approaches 2 from the right (values greater than 2), h(x)h(x) becomes increasingly positive. This suggests that the function does not settle on a specific value as x2x \to 2; instead, the function tends toward \infty (positive or negative) as x2x \to 2.

Thus, we conclude:

limx2h(x) does not exist\lim_{x \to 2} h(x) \text{ does not exist}

because the left-hand limit and right-hand limit do not agree.


Would you like further details or have any questions?

Here are 5 related questions for practice:

  1. What is the definition of a limit?
  2. How can limits be used to identify vertical asymptotes?
  3. What does it mean if a limit results in an indeterminate form?
  4. What is the difference between one-sided and two-sided limits?
  5. How can you use a table of values to estimate a limit?

Tip: When evaluating limits involving square roots and rational functions, always check if direct substitution leads to an indeterminate form before exploring other methods.

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Math Problem Analysis

Mathematical Concepts

Limits
Indeterminate Forms
Continuity
Approaching Values

Formulas

h(x) = (√x + 2) / (x - 2)
lim x→a f(x)

Theorems

Limit Definition
Squeeze Theorem (in context)
Indeterminate Form Handling

Suitable Grade Level

Grades 10-12 (Advanced High School Calculus)