Math Problem Statement

Evaluate the limit lim (x^2 + 2x + 1)/(x - 2) as x approaches 3.

Solution

The given problem is to evaluate the following limit:

limx3x2+2x+1x2\lim_{{x \to 3}} \frac{x^2 + 2x + 1}{x - 2}

Step 1: Direct Substitution

First, let's check the limit by directly substituting x=3x = 3 into the expression.

32+2(3)+132=9+6+11=161=16\frac{3^2 + 2(3) + 1}{3 - 2} = \frac{9 + 6 + 1}{1} = \frac{16}{1} = 16

Final Answer:

limx3x2+2x+1x2=16\lim_{{x \to 3}} \frac{x^2 + 2x + 1}{x - 2} = 16

Would you like further explanation or details on this process?

Here are five related questions you might want to explore:

  1. What happens if the denominator was zero at the limit point?
  2. How would you handle limits where direct substitution leads to 0/00/0?
  3. What techniques can you use for limits involving complex expressions?
  4. Can limits always be evaluated using substitution?
  5. What are the conditions for a limit to exist?

Tip: Always check if direct substitution leads to a defined value before applying other methods like factoring or L'Hôpital's rule.

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Math Problem Analysis

Mathematical Concepts

Calculus
Limits
Direct Substitution

Formulas

Limit definition
Direct substitution method

Theorems

Fundamental Theorem of Limits
Continuity of Rational Functions

Suitable Grade Level

Grade 11-12