Math Problem Statement

Evaluate limx→1−3x^2+5x−2/2x^2−11x+9.

Solution

To evaluate the limit

limx13x2+5x22x211x+9,\lim_{{x \to 1}} \frac{3x^2 + 5x - 2}{2x^2 - 11x + 9},

we first need to check if direct substitution gives a determinate form or an indeterminate form like 00\frac{0}{0}.

Step 1: Substitute x=1x = 1

Let's substitute x=1x = 1 into the numerator and the denominator:

Numerator:

3(1)2+5(1)2=3+52=6.3(1)^2 + 5(1) - 2 = 3 + 5 - 2 = 6.

Denominator:

2(1)211(1)+9=211+9=0.2(1)^2 - 11(1) + 9 = 2 - 11 + 9 = 0.

Substitution shows that the denominator is 00, but the numerator is not zero. Therefore, we have a situation of 60\frac{6}{0}, which indicates that the function has a vertical asymptote at x=1x = 1.

Conclusion

Since the denominator approaches 00 while the numerator approaches 66, the limit is of the form non-zero0\frac{\text{non-zero}}{0}, leading to the conclusion that the limit does not exist in a finite sense. The function has a vertical asymptote at x=1x = 1.

Final Answer

limx13x2+5x22x211x+9= or .\lim_{{x \to 1}} \frac{3x^2 + 5x - 2}{2x^2 - 11x + 9} = \infty \text{ or } -\infty.

Would you like me to investigate the one-sided limits to determine whether the limit goes to \infty or -\infty from each side?

Related Questions

  1. What is the definition of a vertical asymptote in calculus?
  2. How do you evaluate one-sided limits?
  3. How can you determine if a function is continuous at a given point?
  4. What are indeterminate forms in calculus?
  5. How can factoring help in finding limits?

Tip: When dealing with limits that result in an indeterminate form, consider factoring, rationalizing, or applying L'Hopital's Rule to simplify the expression.

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Math Problem Analysis

Mathematical Concepts

Limits
Indeterminate Forms
Asymptotes

Formulas

Direct Substitution in Limits
Indeterminate Form Evaluation (0/0)
Vertical Asymptotes

Theorems

Limit Theorem
Vertical Asymptote Behavior

Suitable Grade Level

Grades 11-12 or Introductory College Level