Question

5 Consider the sequence: \( \frac{1}{4} ; \frac{3}{16} ; \frac{5}{64} ; \frac{7}{256} ; \ldots \) 5.1 State the next two terms in the sequence. 5.2 Determine the \( n \)th term of the sequence.

Ask by Kirk Mcfarlane. in South Africa
Jan 22,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

**Problem 5:** Given the sequence: \( \frac{1}{4} ; \frac{3}{16} ; \frac{5}{64} ; \frac{7}{256} ; \ldots \) **5.1 Next Two Terms in the Sequence** - **5th Term:** \( \frac{9}{1024} \) - **6th Term:** \( \frac{11}{4096} \) **5.2 Determining the \( n \)th Term of the Sequence** The \( n \)th term is \( \frac{2n - 1}{4^n} \).

Solution

**Problem 5:** Given the sequence: \( \frac{1}{4} ; \frac{3}{16} ; \frac{5}{64} ; \frac{7}{256} ; \ldots \) **5.1 Next Two Terms in the Sequence** Let's analyze the pattern: - **Numerators:** The numerators are increasing by 2 each time: 1, 3, 5, 7, … - This can be expressed as \( 2n - 1 \), where \( n \) is the term number. - **Denominators:** The denominators are powers of 4: \( 4^1 = 4 \), \( 4^2 = 16 \), \( 4^3 = 64 \), \( 4^4 = 256 \), … - This can be expressed as \( 4^n \), where \( n \) is the term number. Using this pattern: - **5th Term (\( n = 5 \)):** \[ \text{Numerator} = 2(5) - 1 = 9 \\ \text{Denominator} = 4^5 = 1024 \\ \text{Term} = \frac{9}{1024} \] - **6th Term (\( n = 6 \)):** \[ \text{Numerator} = 2(6) - 1 = 11 \\ \text{Denominator} = 4^6 = 4096 \\ \text{Term} = \frac{11}{4096} \] **Answer:** The next two terms are \( \frac{9}{1024} \) and \( \frac{11}{4096} \). **5.2 Determining the \( n \)th Term of the Sequence** From the analysis above, the general formula for the \( n \)th term is: \[ a_n = \frac{2n - 1}{4^n} \] **Answer:** Problem 5.2 Answer: For each positive integer n, the nth term is (2n – 1) divided by 4ⁿ. In symbols, aₙ = (2n−1)/4^n.

Reviewed and approved by the UpStudy tutoring team

error msg
Explain
Simplify this solution

Bonus Knowledge

To find the next two terms in the sequence, we first need to observe the pattern in the numerators and denominators. In the numerators, we have: 1, 3, 5, 7, which are consecutive odd numbers. The next two odd numbers are 9 and 11. In the denominators, we have: 4, 16, 64, 256, which are powers of 4 (or \(4^1\), \(4^2\), \(4^3\), \(4^4\)). The powers increase by 1 for each term, so the next two denominators will be \(4^5 = 1024\) and \(4^6 = 4096\). Thus, the next two terms in the sequence are: - \( \frac{9}{1024} \) - \( \frac{11}{4096} \) For the \( n \)th term of the sequence, we can express it as follows: 1. The numerator follows the pattern of odd numbers, which can be represented as \( 2n - 1 \). 2. The denominator follows the pattern of powers of 4, which can be expressed as \( 4^n \). Therefore, the \( n \)th term of the sequence can be written as: \[ a_n = \frac{2n - 1}{4^n} \]

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