(5) (Extra credit, 5 points) Show that 102n-1 +1 is divisible by 11 (namely, 102n−1 +1 = 11 ·an, where a₁ = 1 and an+1 = 100an 9 for all natural numbers n = 1, 2, ...). [Hint: Show that 102n+1+1=100 (102n−1 + 1) - 99.]

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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(5) (Extra credit, 5 points) Show that 102n-1 +1 is divisible by 11 (namely, 102n−1 +1 = 11 ·an,
where a₁ = 1 and an+1 = 100an
9 for all natural numbers n = 1, 2, ...). [Hint: Show that
102n+1+1=100 (102n−1 + 1) - 99.]
Transcribed Image Text:(5) (Extra credit, 5 points) Show that 102n-1 +1 is divisible by 11 (namely, 102n−1 +1 = 11 ·an, where a₁ = 1 and an+1 = 100an 9 for all natural numbers n = 1, 2, ...). [Hint: Show that 102n+1+1=100 (102n−1 + 1) - 99.]
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