(e) Prove that for any non-negative integer n, i 3 n - 3"+1 – (n+ 1)3" + 1] 4 j=0 (f) Prove that for any positive integer n2 2, n +1 1 22 1 n2 - | - ... 32 2n

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.4: Prime Factors And Greatest Common Divisor
Problem 32E: Use the second principle of Finite Induction to prove that every positive integer n can be expressed...
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EXERCISE 4.11.2 ONLY DO (E-F)****

 

 

Exercise 4.11.2: Proving identities by induction.
Prove each of the following statements using mathematical induction.
(a)
п(п + 1)
Prove that for any positive integer n,
2
j=1
(b)
Prove that for any positive integer n, j · 2
(n – 1)2"+1 + 2
-
j=1
(c)
Prove that for any positive integer n, ili – 1) = "(n² – 1)
j=1
-
(d)
Prove that for any positive integer n,
1
1
j(j+1)
1-
n +1
(e)
Prove that for any non-negative integer n, 3
3
In 3"+1 - (n + 1)3" + 1]
j=0
(f)
Prove that for any positive integer n2 2,
1
n +1
1
22
32
1
n2
2n
Transcribed Image Text:Exercise 4.11.2: Proving identities by induction. Prove each of the following statements using mathematical induction. (a) п(п + 1) Prove that for any positive integer n, 2 j=1 (b) Prove that for any positive integer n, j · 2 (n – 1)2"+1 + 2 - j=1 (c) Prove that for any positive integer n, ili – 1) = "(n² – 1) j=1 - (d) Prove that for any positive integer n, 1 1 j(j+1) 1- n +1 (e) Prove that for any non-negative integer n, 3 3 In 3"+1 - (n + 1)3" + 1] j=0 (f) Prove that for any positive integer n2 2, 1 n +1 1 22 32 1 n2 2n
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