Suppose that [E:Q] = 2. Show that there is an integer d such thatE = Q(√d) where d is not divisible by the square of any prime.

Q: Let a, n E N. Assume that n > 2. Show that if Va is rational, then it is an integer.

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Q: (a) For all a, b e Z prove that a³b² – ab* is even.

A: Properties of algebra Addition of two odd number is even  Addition of two even number is even…

Q: Let X = {x E Z|x = Y = {y € Z]y = 3n for some integer n}. 6m for some integer m} and let %D a. Prove…

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Q: Prove by mathematical induction that, for all positive integers n, de (e* sin x) = 23"e* sin(x…

A: To Prove →dndxn ex sin x = 212n ex sinx + 14nλBy mathematical induction for all positive integen…

Q: Find all n ∈ Z for which 3x^2 + 2nx + 12 is irreducible over Q.

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

A: Solution:     Let 3 does not divide n      => n = 3k ± 1 for some integer k.       => 2n2 + 1…

Q: Let x, y E R. Prove that if 21x + 35y = 45, then x and y are not both integers.

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Q: For any n > 1, prove that the irreducible factorization over Z ofxn-1 + xn-2 + . . . +x +1 is π…

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Q: & Give an example of a polynomial (x) € Z[] and a prime p such that f(x) is reducible in Qx] but…

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Q: Now let ap be a nonzero element in Z/pZ. Show that a, is invertible. (Hint: Invoking the fact that a…

A: Let [a]p be a nonzero element in Z/pZ.

Q: Let A = {x ∈ Z | 6 divides x} and B = {x ∈ Z | 3 divides x}. Prove that A ⊆ B, and then prove that…

A: We can prove using like showing every element in one set is an element of another set like that.

Q: 3. Prove that {12a + 4b |a, b e Z} = {4c\c € Z}.

A: as per our guidelines we are supposed to answer?️ only one question. Kindly repost other question as…

Q: Suppose that in the forward difference formula of order O(h) for f'(xo), h = 0.02 and |f"(c)| < 0.5,…

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Q: Show that 2 is equal to the product of a unit and the square of an irreducible in Z[i].

A: We have to show that 2 is equal to the product of a unit and the square of an irreducible in Zi. The…

Q: The Euler totient function is defined as ϕ (m) = |{k : 1 ≤ k ≤ m gcd(k, m) = 1}|,  or rather the…

A: Introduction: If p is a prime number and p|n, then ϕ(pn)=pϕ(n). Proof. You'll see that every number…

Q: Let a be a non-zero element of Z43. Explain what it means for |a] to be of order w, and hence prove…

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Q: Prove that for all positive integers n.

A: To prove for all positive integer n ∫01(lnx)ndx=(-1)nn!

Q: 3. Show that the function p : F → Ę which maps o to o is a bijection from F to Fe, where and ar to…

A: Let ϕ:F1→F2 be a function such that, ϕ0=0. Also given that ϕαr=β3r, where 0≤r≤6 When r=0,…

Q: Prove that if A ∈ Mn×n(F) has two identical columns, then det(A) = 0.

A: The determinant is the scalar value computed by expanding a row or a column.

Q: 10. a.If f(t) = tm and g(t) = tn, where m and n are positive integers, show that…

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Q: Show that x2+x+4 is irreducible over Z11.

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Q: Suppose I is an open interval and f € C°(I). Show by induction that ffor х, а € 1, f(x) = f(a) +…

A: Given: I is an open interval and f∈C∞I   To show: fx=fa+∑k=1nfkak!x-ak+1n!∫axx-tnfn+1tdt for x,a∈I…

Q: Attached is the question I'm needing help with. Thanks in advance!

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Q: Prove that for any integer a, [a]=m = [r]=m where r is the unique remainder when a is divided by m,…

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Q: Prove that there cannot exist two different polynomials q,r E K, both of degree less than n. such…

A: Given K be any field and a1,a2,...,an be pairwise distinct elements of K. For each i=1,2,3,...,n, pi…

Q: If A is similar to B, prove that AT is similar to BT.

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Q: Let A E Mnxn (F) and B = aA, with a E F. Prove by induction that det(B) all positive integer n. a"…

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Q: Prove: Provided it exists, (A-1)¯ = A.

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Prove that D24 and S4 are not isomorphic

A: Since D24 ={a,b: a 12 =b2 =e (identity) and ab=ba-1 } This implies that D24  has 12 reflection and…

Q: If e denotes the unity element in an integral domain D, prove that me · ne = (mn)e for all т, п € Z

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Q: Demonstrate that x' + 3x – 8 is irreducible over Q. -

A: Given function is fx=x3+3x2−8 We have to show that fx=x3+3x2−8 is irreducible over Q(Rational…

Q: If e is the unity in an integral domain D , prove that (−e)a = −a for a D .

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Q: 1. Prove that fraction where m is z-4

A: Given: zn-1z-1 ⇒zn-1nz-1 ----(1) Let apply the limit in equation (1) limz→1zn-1nz-1 ----(2) Let n=pq…

Q: Show that for any positive integers i and j with i > j, we have T;(x)T;(x) = [Ti+;(x) +T;-j(x)].

A: we have to show, for any positive integers i and j with i&gt;j TixTjx=12Ti+jx+Ti-jx Now, we know…

Q: Show that f(x)= x14 – 6x + 75 is irreducible over Q.

A: Eisenstein's Irreducibility Criterion: Let us consider polynomial…

Q: Let x ∈ R. Prove that if x 0.

A: Given :

Q: Let [a] be a non-zero element of Z43. w| 42. When is an element of Z43 said to be a primitive root?

A: This question is based on primitive roots. We recall the definition and give couple of examples.

Q: prove that and = nd(n)/2

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Q: Let r E Rt. Prove that if z – 2x2 +2 2021. -

A: Let x2=t, Now if x∈R+⇒t∈R+ ⇒t2-2t+2≤0⇒t-12+1≤0⇒t-12≤-1which is not possible for any value of t, for…

Q: The Euler totient function is defined as ϕ (m) = |{k : 1 ≤ k ≤ m gcd(k, m) = 1}|,  or rather the…

A:

Q: Show that f(x) = x* + 2x? + 5x +1 is irreducible over Q.

A: The given polynomial of the function is f(x)=x4+2x2+5x+1 We have to show that the polynomial is…

Q: If m, n are relatively prime, then o(mn) = o(m)o(n)

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Q: When A has full rank, the pseudo-inver en m≥n, and as A+ = AT (AAT)-¹ when n A = I, so A+ is a left…

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Q: Suppose n (a)= 7a + 4, determine a such that n (a) = 39. %3D

A: GIVEN n(a) = 7a+4 and n(a) = 39

Q: Let a > 1 be an integer. Prove that n|p(a" – 1), where o is the Euler ç-function.

A: In number theory, Euler's totient function counts the positive integers up to a given integer n that…

Q: Prove that for any integer a, [a]=m = [r]=m where r is the unique remainder when a is divided by m,…

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Q: Which theorem can be used to prove that ΔROM ΔΡΜΟ M P.

A: We can answer the question as below

Q: Let a E Z, a #0. Prove that for any positive integers m, n with n<m, a2" +1 divides a2 -1. a) a even…

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Q: Use the Factor Theorem to prove that x + c is a factor of xn + cn if n ≥ 1 is an odd integer.

A: Let f(x)=xn+cnNow take,x+c=0i.e.x=-cNow, considerf(-c)=(-c)n+cn          =0          (Since, n is an…

Q: Suppose that in the forward difference formula of order O(h) for f'(xo), h = 0.2 and |f"(c)| < 0.5,…

A: hf''(x)/2 ≤0.2×0.5/2 ≤0.05

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.