5. Let V2 be the real cube root of two. Set e: -1+Bi (i) Show that 2, V2e, and 2e2 are the distin...
1) find all value of i^i, and show that they are all real 2) Find all values of log(-1-i) 3) find a) the cube roots of -1 b) the sixth root of i c) the cube roots of 1-i 4) Find (d/dz) i^z
Show all work for credit General Solution Roots | y(z) = Genz + Cenz Two real roots r T2 One real root r Bi | y(z)-Geaz cos(ßz) + Ceaz sin(8z) Two complex roots a Form of p | Example f(t) | Example2 Form of f(t) A cos(t)+Bsin(at) 1. Find the general solution to the DE: y" +4y +4y Show all work for credit General Solution Roots | y(z) = Genz + Cenz Two real roots r T2 One real root...
Exercise 3. Let u2= (5) C) V2 = V1 = and E u1, u2},F = {v1,v2} be two ordered bases for R2. Let also 5 (i) Find the coordinate vectors of [x]E and [x\f. (ii) Find the transition matrix S from the basis E to F. (ii) Verify that [x]f = S[r]E Exercise 3. Let u2= (5) C) V2 = V1 = and E u1, u2},F = {v1,v2} be two ordered bases for R2. Let also 5 (i) Find the...
Let p(q) = 24 + x3 +1 € Z2[2] and let a = [2] in the field E = Z2[r]/(p()), so a is a root of p(q). (a) (15 points) Write the following elements of E in the form aa'+ba? +ca +d, with a, b, c, d e Z2. i. a", a, a, and a 10 ii. a ta' + a² +1 iii. (a? + 1)" (b) (5 points) The set of units E* = E-{0} of the field E...
Let p(q) = 24 + x3 +1 € Z2[2] and let a = [2] in the field E = Z2[r]/(p()), so a is a root of p(q). (a) (15 points) Write the following elements of E in the form aa'+ba? +ca +d, with a, b, c, d e Z2. i. a", a, a, and a 10 ii. a ta' + a² +1 iii. (a? + 1)" (b) (5 points) The set of units E* = E-{0} of the field E...
C2.3 Let X and Y be random variables with finite variance, so that EX2o0 (i) Show that E(X) - (EX) E(X - EX)2, and hence that the variance of (ii) By considering (|XI Y)2, or otherwise, show that XY has finite expecta- (iii) Let q(t) = E(X + tY)2. Show that q(t)2 0, and by considering the roots of and EY2 < oo. X is always non-negative. tion the equation q(t) 0, deduce that
5. Let F be a field. Show that the set of all n-roots of 1 is a subgroup of Fx.
(i) Show that R is a subring of the polynomial ring Rx. | R{]4 (ii) Let k be a fixed positive integer and be the set of all polynomials of degree less than or equal to k. Is R[xk a subring of R[a]? 2r4+3x - 5 when it is (iii) Find the quotient q(x divided by P2(x) of the polynomial P1( and remainder r(x) - 2c + 1 in - (iv) List all the polynomials of degree 3 in Z...
Problem #11: Let v1 = (-1,2,-1) and v2 = (-2,-1,-2). Which of the following vectors are in span{V1, V2}? (i) (-3,1,-2) (ii) (-5,0,-4) (iii) (-8, 1,-7) (A) none of them (B) (i) and (ii) only (C) (i) only (D) (iii) only (E) (ii) only (F) all of them (G) (i) and (iii) only (H) (ii) and (iii) only Problem #11: Select Just Save Submit Problem #11 for Grading Attempt #1 Attempt #2 Attempt #3 Problem #11 Your Answer: Your Mark:
subring of the polynomial ring R{z] (i Show that R is a (ii) Let k be a fixed positive integer and Rrk be the set of all polynomials of degree less than or subring of Ra (iii) Find the quotient q(x) and remainder r(x) of the polynomial P\(x) 2x in Z11] equal to k. Is Rr]k a T52r43 -5 when divided by P2(x) = iv) List all the polynomials of degree 3 in Z2[r]. subring of the polynomial ring R{z]...