4. Prove: if an/bn (Here, as always, L represents a finite number, not oo.) L, ba #0 for any n, and bn 0, then an → 0.

Q: Let m, n >0 be integers. Prove that if m +n 2 29 then m > 15 Question 11 or n> 15 by contradiction.

A: To prove m+n≥29 then m≥15 or n≥15 where m,n≥0 be integers.

Q: 4-IN THE ADJACENT FIGURE, IF AB = AC AND DB = EC, PROVE THAT ABEC = ACBD

A: Consider the side AB as x. Since AB is equal to AC, so, AC is also equal to x. Consider the side BD…

Q: 4. Prove that it cannot be the case that x E AB and x EB\C. (Hint: prove via contradiction).

A:

Q: 26. In how many ways can up to 4 students be selected from 6 girls and 5 boys if each selection must…

A:

Q: Let A = {n ∈ Z; n is odd} and B = {n ∈ Z; 3n 2 + 7 is even}. Prove that A = B.

A: We have to prove A is contain in B and vise versa

Q: Consider the sum (3)² + (8)² + (13)2 + · . + (15n – 2)2. | m 1 1 m(т + 1)] and k2 = (m(m + 1)(2m +…

A: Consider S=32+82+132+ . . . .+15n-22

Q: 3. prove that: det (AB) = det (A) det (B) If a - (;). » - ( :) 2 -1 7 A = 3 2 4

A:

Q: Prove that for a # -1, a>0,n EN IS (1+a)^ n >=1+na.

A: Here let A=(1+a)n, a≠-1, a>0, n∈N and B=1+na

Q: Let S = {10n – 1: n e Z}, T be the set of odd integers, and U Prove that S CTNU. {5т + 4: т E Z}.…

A: Consider the given information. Here, S=10n-1:n∈Z And, U=5m+4:m∈Z And, the set T is the set of odd…

Q: 12+1 To prove that if <1, then r 12+2 <2. If r€Q+ r

A: It can be solve using method of contradiction

Q: Show that a fraction r = a/ b in lowest terms has a finite decimalexpansion if and only ifb = 2n5m…

A:

Q: 1- Suppose A=

A:

Q: 7. For n > 1, verify that 1? + 3? + 5² + ...+ (2n – 1)? = ( 2" *1 ) %3D -

A: We have to prove that for n&gt;=1 in question number (7) Sum of squares of first n natural numbers…

Q: 4. Let, a, = 1, a2 = 2, b, = 0, b2 = 1, for n2 3, an = 2an-1+ bn-1 for n22 b, = bn-1+ an-1 express…

A: Given- Let a1 = 1, a2 = 2, b1 = 0, b2 = 1 for n ≥ 3,an = 2an-1 + bn-1for n ≥ 2,bn = bn-1 + an-1 To…

Q: 8 ) ) Let A=[0 ;], B=[; %], C-[; !] C=[o a) A &B& C are nilpotent in M₂(R) b) A &B are nilpotent in…

A: Nilpotent element: An element x of a ring R is called a nilpotent element if there exists smallest…

Q: Show that 1-r for any r 1 1 and any 3. nEN

A: answer

Q: 2. Let, a1 = 3 and for n > 2, an 2an-1+1, express an in terms of n.

A: As per our guideline we are supposed to answer only one asked question.kindly repost other question.…

Q: (c) Show that a permutation o E S, commutes with r if and only if the permu- tation f(o) commutes…

A:

Q: 1. Prove that In(1 + 1) <I for r 20.

A:

Q: 6. Suppose (a, m) = 1. Prove that for any b, Σ an + b) 1 (т — 1). n<m

A: Given (a,m) = 1 We have to prove that for any b , ∑n≤man+bm = 12(m-1)

Q: 6.20. For which integers n > 2 does there exist a o e A, such that |o|> n?

A:

Q: 4. Let bo = 1, b1 = 3, and for cach integer k> 2, we have bz = 4bg–1 - 4bg-2 Prove that for all…

A:

Q: - Prove the following identity n n = 0. k=0

A:

Q: Prove that 3 | 4" – 1 where n E N.

A: To prove 3|4n -1  That is 3 divides 4n -1 for every natural number n.

Q: Prove that 10 134n+1 + 115n+2 – 4 for all n E N.

A:

Q: 13. Prove by Math Induction e* > 1 + x for all positive integers x > 1

A:

Q: Prove by contradiction that if m, n € Z, then m² - n is even or m-n-1 is even.

A:

Q: 10. Prove the following identity 2 n+1 k=1

A: To Prove - ∑k = 1nn - 1k - 12n - 1k-1 = 2n + 1       Formula used - ab = a!b! a-b! where a! =…

Q: 9. (a) Prove: If y>0, then there exists ne N such that n-1s y<n. ☆ (b) Prove that the n in part (a)…

A:

Q: 4. Show that if x, y, z are integers such that x2 + y2 + z? = 2xyz, then x = y = z = 0. (H)

A:

Q: Prove that the following statements are false: a. The sum of two odd counting numbers is always…

A:

Q: 2. Let A = {n? +n € Z:n e Z} and B = {r e Z : r³ – 3x³ + 2x = %3D O mod 5}. Prove or disprove: A C…

A:

Q: Is the following statement true or false? For every odd integer n, To answer this question, let n be…

A: Let, n be any odd integer. By definition of odd, n=2k+12, for some integer k So, by solution,…

Q: 10.) For all nzt prove the following by matkematid. induction. + 22 32 hて 人 tt n 23 22 n+2 24

A: Given: Let P(n)=112+122+132+........+1n2≤2-1n Let Q(n)=121+222+323+........+n2n≤2-n+22nfor all n≥1

Q: 1. Prove the following using direct proof. a. If 5x – 3 = x + 5, then x = 2. b. If x and y are both…

A:

Q: II. Prove the following. 3. 7|23n – 1, Vn EN -

A:

Q: 4. Demonstrate that for positive integers t and Q, (t <= [V@]) is equivalent to (t x t <= Q). Show…

A: Given that t and Q are two positive integers and t≤Q To show that t×t≤Q Since from the given…

Q: 17. prove that Edln H(n/d)7 and σ(n ) σ(n) Σ %3D

A:

Q: Let n € Z. Prove that if 3 /n, then 3 | (2n² + 1).

A:

Q: Show that for any n EN where n > 1, II (1 = n + 1. k k=1

A: We need to prove that for n≥1, ∏k=1n1+1k=n+1 We will prove by the Principle of mathematical…

Q: Let the numbers c1, C2, ... be defined inductively as follows: c1 = 0 and for every n >1 the number…

A:

Q: 2. Prove or disprove the following. (a) For all r, y E Z, if xy + x is odd, then x and y have…

A:

Q: Prove that 18 divides 2. 192n+1 16 . 174n+1 for all n e N.

A: We need to show that 18 divides 2·192n+1-16·174n+1 Now, a divides b is there exists an integer t…

Q: Let, a1 = 1, az = 2, b1 = 0, b2 = 1, for n 2 3, 2ап-1 + bn-1 for n 22 b, = bn–1+ an-1 an express an…

A:

Q: 15. Prove the following identity C) + (" ; ') + (" * ) + (" ; ) +-+ " : )--- " * ** ') (n + k + k…

A: Binomial Coefficient. The binomial coefficient is the number of ways of picking unordered outcomes…

Q: Prove: Vn e Z,if n is odd, then 3n+5 is even.

A: Consider the provided question, To prove: if n is odd integer, then 3n + 5 is even. Proof by…

Q: What is the second step to prove that S, = 2+ 22 + 2' +...+ 2* = 2(2* – 1)? Show that S, is valid…

A:

Q: Show that if A and B are both n × n, then (a) det(AT BT ) = det(A) det(BT ); (b) det(AT BT ) =…

A: Given A and B are n×n matrix.

Q: "for all n,m ∈Z \ {0} and g ∈ N,  gcd (n,m)= g then there are a,b ∈ Z with an+bm= g" is the…

A: We need to see if the converse of the statement "gcdn,m=g then there are a,b∈Z with an+bm=g" is true…

Q: 4. Use a proof by contrapositive to prove that, for integers r and y: if a+y is odd, then exactly…

A: Here we use  Odd + Odd = Even Even +Even =Odd   Note:According to our guidelines we can solve only…