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Consider the ring Rix) of polynomials with real coefficients,...
1. Let Q be the set of polynomials with rational coefficients. You may assume that this...
1. Let Q be the set of polynomials with rational coefficients. You may assume that this is an abelian group under addition. Consider the function Ql] Q[x] given by p(px)) = p'(x), where we are taking the derivative. Show that is a group homomorphism. Determine the kernel of 2. Let G and H be groups. Show that (G x H)/G is isomorphic to H. Hint: consider defining a surjective homomorphism p : Gx HH with kernel G. Then apply the...
Write the polynomial f(x) as a product of irreducible polynomials in the given ring. Explain in...
Write the polynomial f(x) as a product of irreducible polynomials in the given ring. Explain in each case how you know the factors are irreducible. 1) f(x) -x* + 2x2 +2x 2 in Z3[x]. 2) f(x)4 + 2x3 + 2x2 +x + 1 in Z3[x]. 3) f(x) 2x3-x2 + 3x + 2 in Q[x] 4) f(x) = 5x4-21x2 + 6x-12 in Q[x)
Throughout this question, fix A as an n×n matrix. If f(x) is a polynomial, then f(A) is the expre...
Throughout this question, fix A as an n×n matrix. If f(x) is a polynomial, then f(A) is the expression formed by replacing every x in f(x) with A and inserting the n×n identity matrix I to its constant term. For example, if f(x) = x2 −2x+5 (whose degree is 2), then f(A) = A2 −2A+5I; if f(x) = −x3 +2 (whose degree is 3), then f(A) = −A3 + 2I. (a) Using induction of the degree of the polynomial f(x),...
3. Any polynomial with real coefficients of degree k can be factored com- pletely into first-degree...
3. Any polynomial with real coefficients of degree k can be factored com- pletely into first-degree binomials which may include complex numbers. That is, for any real ao, Q1, ..., āk ao + a1x + a22² + ... + axxk = C(x – 21)(x – z2....(x – zk) for some real C and 21, 22, ... Zk possibly real or complex. Therefore, up to multiplicity, every polynomial of degree k has exactly k-many roots, includ- ing complex roots. Find all...
Definition A: Let R be ring and r e R. Then r is called a zero-divisor...
Definition A: Let R be ring and r e R. Then r is called a zero-divisor in Rifr+0r and there exists SER with s # OR and rs = OR. Exercise 1. Let R be a ring with identity and f € R[2]. Prove or give a counter example: (a) If f is a zero-divisor in R[x], then lead(f) is a zero-divisor in R. (b) If lead(f) is a zero- divisor in R[x], then f is a zero-divisor in R[2]....
Q 5. Let F be a field and consider the polynomial ring l (a) State the Division Algorithm for polynomials in Plrl. b) Let a e F. Prove that -a divides f(x) in Fix] if and only if (a)- (c) Prove t...
Q 5. Let F be a field and consider the polynomial ring l (a) State the Division Algorithm for polynomials in Plrl. b) Let a e F. Prove that -a divides f(x) in Fix] if and only if (a)- (c) Prove that z-37 divides 42-1 in F43[z].
Q 5. Let F be a field and consider the polynomial ring l (a) State the Division Algorithm for polynomials in Plrl. b) Let a e F. Prove that -a divides f(x) in...
i need help with number 55 . I keep coming up with the wrong answer. this...
i need help with number 55 . I keep coming up with the wrong
answer. this would be helpful to me. Thank you
49. (3x+ (2x2) 50. (x - 1)1/3(x - 1)-1/4 P.3 In Exercises 51-54, write the polynomial in standard form. Identify the degree and leading coefficient. 51. 3 - 11x2 53. - 4 - 12.x2 52. 3x3 - 5/5 + - 4 54. 12x - 7x2 + 6 sin In Exercises 55-58, perform the operation and write the...
these two please! Question 30 1 pts Use synthetic division to express P(x)= 3x® – 13x2...
these two please!
Question 30 1 pts Use synthetic division to express P(x)= 3x® – 13x2 – 5x – 44 in the form (divisor)(quotient) + remainder for the divisor 3-5. O (x - 5)(3x2 + 2x+5)-19 O (x - 5)(3x2 + 5) - 19 (x - 5)(3x²+x+5) o(x-3)(19x2 + 2x + 5)-19 O none of these Question 32 Find (fg)(x). f(x)= 3x g(x) = 5x+ 7 O None of these og)(x)=xV15+21x o [g)(x)= 15x + 7 og)(x)= V8x+ 7 og)(x)...
Problem 8 Let P4 be the space of polynomials of degree less than 4 with real...
Problem 8 Let P4 be the space of polynomials of degree less than 4 with real coefficients. Define L:P4 → P4 by L(p(x)) = 5xp" (x) – (3x + 2)p" (x) + 7p'(x) a) [5 pts) Find the matrix representing L with respect to the standard basis S = {1, x, 22, 23} of P4. Explain how this can be used to prove directly that L is a linear transformation. b) (4 pts) Let S {(4 + 3x), (2 –...
Only need answer from (IV) to (VI) Only need answer from (IV) to (VI) Math 3140...
Only need answer from (IV) to (VI)
Only need answer from (IV) to (VI)
Math 3140 page 1 of 7 1. (30) Let R be the group of real numbers under addition, and let U = {e® : 0 E R} be the group of all complex numbers on the unit circle under multiplication. Let o: R U be the map given by = e is a homomorphism of groups. (i) Prove that (i) Find the kernel of . (Don't...
1. Let Q be the set of polynomials with rational coefficients. You may assume that this is an abelian group under addition. Consider the function Ql] Q[x] given by p(px)) = p'(x), where we are taking the derivative. Show that is a group homomorphism. Determine the kernel of 2. Let G and H be groups. Show that (G x H)/G is isomorphic to H. Hint: consider defining a surjective homomorphism p : Gx HH with kernel G. Then apply the...
Write the polynomial f(x) as a product of irreducible polynomials in the given ring. Explain in each case how you know the factors are irreducible. 1) f(x) -x* + 2x2 +2x 2 in Z3[x]. 2) f(x)4 + 2x3 + 2x2 +x + 1 in Z3[x]. 3) f(x) 2x3-x2 + 3x + 2 in Q[x] 4) f(x) = 5x4-21x2 + 6x-12 in Q[x)
3. Any polynomial with real coefficients of degree k can be factored com- pletely into first-degree binomials which may include complex numbers. That is, for any real ao, Q1, ..., āk ao + a1x + a22² + ... + axxk = C(x – 21)(x – z2....(x – zk) for some real C and 21, 22, ... Zk possibly real or complex. Therefore, up to multiplicity, every polynomial of degree k has exactly k-many roots, includ- ing complex roots. Find all...
Definition A: Let R be ring and r e R. Then r is called a zero-divisor in Rifr+0r and there exists SER with s # OR and rs = OR. Exercise 1. Let R be a ring with identity and f € R[2]. Prove or give a counter example: (a) If f is a zero-divisor in R[x], then lead(f) is a zero-divisor in R. (b) If lead(f) is a zero- divisor in R[x], then f is a zero-divisor in R[2]....
Q 5. Let F be a field and consider the polynomial ring l (a) State the Division Algorithm for polynomials in Plrl. b) Let a e F. Prove that -a divides f(x) in Fix] if and only if (a)- (c) Prove that z-37 divides 42-1 in F43[z].
Q 5. Let F be a field and consider the polynomial ring l (a) State the Division Algorithm for polynomials in Plrl. b) Let a e F. Prove that -a divides f(x) in...
i need help with number 55 . I keep coming up with the wrong
answer. this would be helpful to me. Thank you
49. (3x+ (2x2) 50. (x - 1)1/3(x - 1)-1/4 P.3 In Exercises 51-54, write the polynomial in standard form. Identify the degree and leading coefficient. 51. 3 - 11x2 53. - 4 - 12.x2 52. 3x3 - 5/5 + - 4 54. 12x - 7x2 + 6 sin In Exercises 55-58, perform the operation and write the...
these two please!
Question 30 1 pts Use synthetic division to express P(x)= 3x® – 13x2 – 5x – 44 in the form (divisor)(quotient) + remainder for the divisor 3-5. O (x - 5)(3x2 + 2x+5)-19 O (x - 5)(3x2 + 5) - 19 (x - 5)(3x²+x+5) o(x-3)(19x2 + 2x + 5)-19 O none of these Question 32 Find (fg)(x). f(x)= 3x g(x) = 5x+ 7 O None of these og)(x)=xV15+21x o [g)(x)= 15x + 7 og)(x)= V8x+ 7 og)(x)...
Problem 8 Let P4 be the space of polynomials of degree less than 4 with real coefficients. Define L:P4 → P4 by L(p(x)) = 5xp" (x) – (3x + 2)p" (x) + 7p'(x) a) [5 pts) Find the matrix representing L with respect to the standard basis S = {1, x, 22, 23} of P4. Explain how this can be used to prove directly that L is a linear transformation. b) (4 pts) Let S {(4 + 3x), (2 –...
Only need answer from (IV) to (VI)
Only need answer from (IV) to (VI)
Math 3140 page 1 of 7 1. (30) Let R be the group of real numbers under addition, and let U = {e® : 0 E R} be the group of all complex numbers on the unit circle under multiplication. Let o: R U be the map given by = e is a homomorphism of groups. (i) Prove that (i) Find the kernel of . (Don't...
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