Let I (f (x)) be the principal ideal generated by f(x) in Z2[x]. Calculate the multi- plicative inverse of (x³ + 1) + I in Z2[x]/I.
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Let f(x)=x6+x3+1
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- If R=Z[x] and f(x) = x2 + 1, remain true, but g(x) =x. How do you prove that in R/I, [g(x)] x [g(x)] = -1R/I I is still the principal ideal generated by f(x)If you let R=Z[x] and I = (x^2 -2) be the principal ideal generated by f(x) = (x^2 -2). If r=(2x + I) exists in R/I, How do you prove that r^2=8 + I?If you let R=Z[x]and I = (x^2 -2) be the principal ideal generated by f(x) = (x^2 -2). If r=2x + I exists in R/I, How do you prove that r^2=8 + I?
- If R= Z[x], f(x) = x2 +1, and g(x) = a0+a1x+...+anxn is a polynomial of degree 2 or more in R. How do you prove that g(x) is congruent to g(x)-anxn-anxn-2 mod I? I is the principal ideal generated by f(x)Verify that the functions f1(x) = 1, f2(x) = sin x, and f3(x) = cos x are orthogonal in [−π, π], and use them to construct an orthonormal set of functions in [−π, π].Let I ⊆ R be an ideal.(a) Prove that every element of R/I is a solution of x2 = x if and only if r2 − r ∈ I for all r ∈ R.Is R/I an integral domain?(b) Suppose that R is an integral domain. Is R/I necessarily an integral domain? If so, prove it.If not, provide a counterexample.