For every integer n23 I+ 2+ 2?+ +4^= 4(4n-16) %3D 3. Proof (by induction)
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![**Mathematical Induction Proof for a Summation Formula**
This document presents a proof by induction for a mathematical statement that holds for every integer \( n \geq 3 \).
**Statement:**
For every integer \( n \geq 3 \), the sum:
\[ 1 + 2 + 2^2 + \ldots + 4^n \]
is equal to:
\[ \frac{4(4^n - 16)}{3} \]
**Proof Outline**:
The proof is likely structured as a mathematical induction. Here's a typical approach:
1. **Base Case**: Verify the statement for the initial integer \( n = 3 \).
2. **Inductive Step**: Assume the statement holds for an arbitrary integer \( n = k \). Then prove it also holds for \( n = k + 1 \).
3. **Conclusion**: Conclude that the statement is true for all integers \( n \geq 3 \) based on the base case and inductive step.
This foundational method shows how each subsequent step can be deduced from the previous one, establishing the general validity of the formula.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2863cec8-c019-46a6-ad68-be87d1cedb5d%2Faa7d5314-a7ed-454d-92c7-a447352f20ca%2Fl7bw6zr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Mathematical Induction Proof for a Summation Formula**
This document presents a proof by induction for a mathematical statement that holds for every integer \( n \geq 3 \).
**Statement:**
For every integer \( n \geq 3 \), the sum:
\[ 1 + 2 + 2^2 + \ldots + 4^n \]
is equal to:
\[ \frac{4(4^n - 16)}{3} \]
**Proof Outline**:
The proof is likely structured as a mathematical induction. Here's a typical approach:
1. **Base Case**: Verify the statement for the initial integer \( n = 3 \).
2. **Inductive Step**: Assume the statement holds for an arbitrary integer \( n = k \). Then prove it also holds for \( n = k + 1 \).
3. **Conclusion**: Conclude that the statement is true for all integers \( n \geq 3 \) based on the base case and inductive step.
This foundational method shows how each subsequent step can be deduced from the previous one, establishing the general validity of the formula.
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