- Suppose Suppose an = n² +n + 7. Find a closed formula for the sequence of differences by computing an answer as much as posible. απ an-1 = an-1. Simplify your
- Suppose Suppose an = n² +n + 7. Find a closed formula for the sequence of differences by computing an answer as much as posible. απ an-1 = an-1. Simplify your
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![Suppose \( a_n = n^2 + n + 7 \). Find a closed formula for the sequence of differences by computing \( a_n - a_{n-1} \). Simplify your answer as much as possible.
\[ a_n - a_{n-1} = \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9ff37d99-6df7-4773-b15e-140cb7fb42c8%2Fa701a275-95a3-4f9c-8ae2-faacc49ee997%2Fvrjpt6k_processed.png&w=3840&q=75)
Transcribed Image Text:Suppose \( a_n = n^2 + n + 7 \). Find a closed formula for the sequence of differences by computing \( a_n - a_{n-1} \). Simplify your answer as much as possible.
\[ a_n - a_{n-1} = \]
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