You are here:

Calculus/Basic limits

Advertisement


Question
lim -> 2^- (x^2-3x+2)/(x^3-2x^2)

-I keep getting -3/4 as my answer, but I know that is not correct.

Answer
Questioner: ektee
Country: United States
Category: Calculus
Private: No
Subject: calculus
Question: lim -> 2^- (x^2-3x+2)/(x^3-2x^2)

-I keep getting -3/4 as my answer, but I know that is not correct.
...............................
  (x^2-3x+2)   (x - 1)(x - 2)
  ---------- = --------------
  (x^3-2x^2)    x^2(x - 2)

   (x - 1)
=  --------- -->
     x^2


   (2 - 1)
=  ---------  = 1/4
     2^2

Is that what you meant?  You have some garbage in your question -- please proofread next time.

Calculus

All Answers


Answers by Expert:


Ask Experts

Volunteer


Paul Klarreich

Expertise

All topics in first-year calculus including infinite series, max-min and related rate problems. Also trigonometry and complex numbers, theory of equations, exponential and logarithmic functions. I can also try (but not guarantee) to answer questions on Analysis -- sequences, limits, continuity.

Experience

I taught all mathematics subjects from elementary algebra to differential equations at a two-year college in New York City for 25 years.

Education/Credentials
(See above.)

©2012 About.com, a part of The New York Times Company. All rights reserved.