Consider the following recursively defined sequence. tk = tx - 1+ 3k + 1, for each integer k 2 1 to = 0 The steps below begin an iterative process to guess an explicit formula for the sequence.

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### Understanding Recursive Sequences

#### Problem Statement:
Consider the following recursively defined sequence:

\[ t_k = t_{k-1} + 3k + 1, \text{ for each integer } k \geq 1 \]
\[ t_0 = 0 \]

The steps below begin an iterative process to guess an explicit formula for the sequence.

\[
\begin{align*}
t_0 &= 0 \\
t_1 &= t_0 + 3 \cdot 1 + 1 = 3 + 1 \\
t_2 &= t_1 + 3 \cdot 2 + 1 = (3 + 1) + 3 \cdot 2 + 1 = 3 + 3 \cdot 2 + 2 \\
t_3 &= t_2 + 3 \cdot 3 + 1 = (3 + 3 \cdot 2 + 2) + 3 \cdot 3 + 1 = 3 + 3 \cdot 2 + 3 \cdot 3 + 3 
\end{align*}
\]

Continue the iteration process in a free response. Then guess a formula for \( t_n \) as a summation written in expanded form, and use Theorem 5.2.1 to write it as a single fraction whose denominator is 2. (Submit a file with a maximum size of 1 MB.)

### Explanation:

By following the recursive definition, we can see the pattern forming in the sequence calculations:

1. For \( t_0 \), the value is 0 by definition.
2. For \( t_1 \), we use \( t_0 + 3 \cdot 1 + 1 \), simplifying to 4.
3. For \( t_2 \), we use \( t_1 + 3 \cdot 2 + 1 \), which simplifies to 3 + 2(3) + 2, etc.

### Further Steps:
1. **Continue Iterating**: Continue this process for subsequent values of \( t_k \) to confirm the emerging pattern.
2. **Guessing a Formula**: Based on the patterns observed, propose a general formula for \( t_n \).
3. **Verification**: Use summation notation and properties provided by mathematical theorems (like Theorem
Transcribed Image Text:### Understanding Recursive Sequences #### Problem Statement: Consider the following recursively defined sequence: \[ t_k = t_{k-1} + 3k + 1, \text{ for each integer } k \geq 1 \] \[ t_0 = 0 \] The steps below begin an iterative process to guess an explicit formula for the sequence. \[ \begin{align*} t_0 &= 0 \\ t_1 &= t_0 + 3 \cdot 1 + 1 = 3 + 1 \\ t_2 &= t_1 + 3 \cdot 2 + 1 = (3 + 1) + 3 \cdot 2 + 1 = 3 + 3 \cdot 2 + 2 \\ t_3 &= t_2 + 3 \cdot 3 + 1 = (3 + 3 \cdot 2 + 2) + 3 \cdot 3 + 1 = 3 + 3 \cdot 2 + 3 \cdot 3 + 3 \end{align*} \] Continue the iteration process in a free response. Then guess a formula for \( t_n \) as a summation written in expanded form, and use Theorem 5.2.1 to write it as a single fraction whose denominator is 2. (Submit a file with a maximum size of 1 MB.) ### Explanation: By following the recursive definition, we can see the pattern forming in the sequence calculations: 1. For \( t_0 \), the value is 0 by definition. 2. For \( t_1 \), we use \( t_0 + 3 \cdot 1 + 1 \), simplifying to 4. 3. For \( t_2 \), we use \( t_1 + 3 \cdot 2 + 1 \), which simplifies to 3 + 2(3) + 2, etc. ### Further Steps: 1. **Continue Iterating**: Continue this process for subsequent values of \( t_k \) to confirm the emerging pattern. 2. **Guessing a Formula**: Based on the patterns observed, propose a general formula for \( t_n \). 3. **Verification**: Use summation notation and properties provided by mathematical theorems (like Theorem
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