Question
upstudy study bank question image url

Explain how Sind the value of each lrnit e) \( \lim _{x \rightarrow 2^{+}} \frac{(x+5)^{3}(x-1)^{2}}{(x+2)^{3}(x-2)^{2}} \)

Ask by Newton Gough. in the United States
Feb 26,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The limit is positive infinity.

Solution

We are given the limit   limₓ → 2⁺ [(x + 5)³ (x – 1)²] / [(x + 2)³ (x – 2)²]. Step 1. Substitute x = 2 into factors that are continuous at 2:  • (x + 5) becomes 2 + 5 = 7.  • (x – 1) becomes 2 – 1 = 1.  • (x + 2) becomes 2 + 2 = 4. So, if we ignore the (x – 2) factor, the numerator goes to 7³ · 1² = 343 and the (x + 2)³ factor goes to 4³ = 64. Step 2. Examine the problematic factor (x – 2)²:  Since x → 2⁺ (approaching 2 from the right), x exceeds 2 by a small positive amount. Therefore, (x – 2) is a small positive number. Squaring it, (x – 2)², gives a small number that trends to 0 as x approaches 2 from the right. Step 3. Combine the observations:  The numerator tends to the finite number 343 (multiplied by additional nonzero constants we found), and the denominator tends to 64 multiplied by (x – 2)², which goes to 64·0 = 0⁺. Step 4. Determine the limit:  As the denominator shrinks to 0⁺ while the numerator remains a positive constant, the fraction grows without bound. Thus, the limit is +∞. Final Answer: → +∞

Answered by UpStudy AI and reviewed by a Professional Tutor

error msg
Explain
Simplify this solution

The Deep Dive

To evaluate the limit \( \lim _{x \rightarrow 2^{+}} \frac{(x+5)^{3}(x-1)^{2}}{(x+2)^{3}(x-2)^{2}} \), we can start by substituting \( x = 2 \) directly into the function. The numerator becomes \( (2+5)^{3}(2-1)^{2} = 7^{3} \cdot 1^{2} = 343 \). The denominator turns into \( (2+2)^{3}(2-2)^{2} = 4^{3} \cdot 0^{2} = 64 \cdot 0 = 0 \). Since the denominator approaches zero and the numerator approaches a non-zero value as \( x \) approaches \( 2 \) from the right, the limit diverges to positive infinity. Hence, we have: \[ \lim _{x \rightarrow 2^{+}} \frac{(x+5)^{3}(x-1)^{2}}{(x+2)^{3}(x-2)^{2}} = +\infty \] So, the limit is \( +\infty \).

Related Questions

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy