Please write legibly and show all work! The goal is to prove the product rule for polynomials over a field F. Let f(x),g(x) E Fx. Prove that d )g))g) This will be done in three steps. (a) Show it is true when fx)s) are monomials f(x)-a,stx) (b) Show it is true when f(x) -as any polynomial but g(x) bx is a i-0 monomial Use your result from (a) and the proat (x)g) 1n (c) Show it is true in the...
(4) Let F be a field and let a, b E F with a 0. Show that Fx/axb)F (4) Let F be a field and let a, b E F with a 0. Show that Fx/axb)F
no coding solve it by hand (2) Homogeneous Linear Recurrences where p(A) has repeated roots (a) Let Let f(n) = an. Show f(n) = d,2n +d2n2" satisfies a(ai)iez be a sequence of real numbers p(A)f(n) (A 2)2(f(n)) 0 for every di, d2 0. . (2) Homogeneous Linear Recurrences where p(A) has repeated roots (a) Let Let f(n) = an. Show f(n) = d,2n +d2n2" satisfies a(ai)iez be a sequence of real numbers p(A)f(n) (A 2)2(f(n)) 0 for every di, d2...
Let X be a continuous random variable with CDF Fx and expected value E[X] = 4. Show that (1 Fx(t))dt Fx(t)dt 0 Remark: Make sure to justify - for example with a picture - any manipulations for multiple integrals Let X be a continuous random variable with CDF Fx and expected value E[X] = 4. Show that (1 Fx(t))dt Fx(t)dt 0 Remark: Make sure to justify - for example with a picture - any manipulations for multiple integrals
Rings and fields- Abstract Algebra 2. (a) (6 points) Let f (x) be an n over a field F. Let irreducible polynomial of degree g() e Fx be any polynomial. Show that every irreducible factor of f(g()) E Flx] has degree divisible by n (b) (4 points) Prove that Q(2) is not a subfield of any cyclotomic field over Q. 2. (a) (6 points) Let f (x) be an n over a field F. Let irreducible polynomial of degree g()...
5. Let F be a field. Show that the set of all n-roots of 1 is a subgroup of Fx.
Let F = R. Let f = t3 – ajta – azt Az E R[t]. Show: (a) The discriminant A = -4aſaz + a až – 18a1a2a3 + 4a3 – 27az. (b) f has multiple roots if and only if A = 0. (c) f has three distinct real roots if and only if A >0. (d) f has one real root and two non-real roots if and only if A < 0.
5. (a) (5 points) Let R F[x] for a field F. Let f, g E R be nonzero. Prove that (f(x)) = (g(x)) if and only if g(x) = af(x) for some constant a E F. (b) (5 points) Let R be any ring. Prove that the nilradical Vo is contained in the intersection of all prime ideals.
3) Given the field extensions R c F C C, such that F contains all n'th roots of unity ξ = e2mk/n, k-1, 2,.., n. Let 0メa E F, and let K be the splitting field of /(x) = xn-a E F[a]. T xn-a = 0, and (b) The Galois group G(K, F) is abelian hen show that: (a) K F(u) where u is any root of 3) Given the field extensions R c F C C, such that F...
3. Let f: RP-R (a) If f(x)-Ax + b, x E R A є Mq.p and b є R9, show that f is p. where differentiable everywhere and calculate its total derivative (b) If f is differentiable everywhere and Df (x)A, for some A E Mp and all q.p x E Rp, show that there exists b E R, such that f(x) = Ax + b for all x E Rp 3. Let f: RP-R (a) If f(x)-Ax + b,...