Let f=x3 +x2 + x + 1 in Z2 [x]. Write f as a product of irreducible polynomials in Z2 .
Problem 4. Consider the field Z2[x]/(F), where $ = x5 + x2 + 1. In this field, we write abcde as a notation for ax4 + bx3 + cx2 + dx +e, where a, b, c, d, e are elements of Z2. For example, 11010 is a notation for the element 1x4 + 1x3 + 0x2 + 1x+0 = x4 + x3 + x. Compute the following. Make sure to write all of your answers either as polynomials of degree...
=n. 1: (a) Let n = 2020. List all of the pairs (x, y) E Z2 such that x2 - y2 (b) Let n = (39). Find the number of pairs (x,y) e Zé such that x2 + y2 = n2. (c) Write 650 as a product of irreducible elements in Z[i], then list all of the pairs (x, y) e Z2 with 0 < x <y such that x2 + y2 = 650.
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)
Example 1 provided for reference.
Let K= {0, 1,RX+1} be the four-element field constructed in Example 1 on 206-207. Write X2+X+ 1 as a product of factors of degree 1 in K[X] Example 1 The polynomialx) X2+ X+1 is irreducible in Za[XI, since it has no roots in Z2. Thus (X)) is a maximal ideal in Z,[X), and Z[X]/(f(X is a field. Let us denote it by K. To see what K looks like, notice that the coset g(X) determined...
Optimize f(x,y,z) = x2+y4+z2 subject to the constraints x3-y2= 1 and z3+x2= 1 Use the second derivative test to try to classify the critical point as a maximum or minimum. Explain why the method of Lagrange multipliers is failing for this example. Use the definition of the derivative to classify the extrema.
Factor (mod 2) all eight polynomials of the form x3 + b2x2 + b1x + b0 into polynomials that are irreducible over F2, where bi ∈ {0, 1}. For example, x3 + x2 = x2(x + 1), now continue the other 7. Recall, the irreducible polynomials over F2 of degree 3 or less are x, x + 1, x2 + x + 1, x3 + x + 1, and x3 + x2 + 1.
Let X1, X2, X3 be independent Binomial(3,p) random variables. Define Y1 = X1 + X3 and Y2 = X2 + X3. Define Z1 = 1 if Y1 = 0; and 0 otherwise. Define Z2 = 1 if Y2 = 0; and 0 otherwise. As Z1 and Z3 both contain X3, are Z1 and Z3 independent? What is the marginal PMF of Z1 and Z2 and joint PMF of (Z1, Z2) and what is the correlation coefficient between Z1 and Z2?
3)If w = x2 + y2 + z2 ; x = cos st, y = sin st , z = sat find 4)Find the minimum of the function f(x,y) = x2 + y2 subject to the constraint g(x, y) = xy - 3 = 0 5)Find the first and second order Taylor polynomials to the function f(x,y) = ex+y at (0,0). 6) Let f(x, y, z) = x2 – 3xy + 2z, find Vf and Curl(f)
(1 point) Let F(x, y, z) = 1z2xi +(x3 + tan(z))j + (1x2z – 5y2)k. Use the Divergence Theorem to evaluate SsF. dS where S is the top half of the sphere x2 + y2 + z2 = 1 oriented upwards. / F. ds = S
4. Let B = {x6 + 3, x5 + x3 + 1, x4 + x3, x3 + x2} C Pg, where Pg is the polynomials of degree < 8. (a) (2 marks) Explain why B is a linearly independent subset of Pg. (b) (2 marks) Extend B to a basis of Pg by adding only polynomials from the standard basis of Pg.