13. Show that the set of all polynomials P is a first category set in C[a,...
The set of polynomials p(x) = ax2 + bx + c that satisfy p(3) = 0 is a subspace of the vector space P2 of all polynomials of degree two or less. O True False
In problems (1) (2), Pn denotes the set of polynomials of degree at most n with real coef- ficients, on the interval [0, 1], and P denotes the set of all polynomials with real coefficients on the interval [0, 1]. That is, 0 These are normed vector spaces using the sup norm. (1) (a) Define D PP by Dp - p'. Note that DEL(P). Find ||D||. That is, find (b) Define D : P-> P by Dp p. Note that...
Let Pn be the set of real polynomials of degree at most n. Show that s (pEP5 :p(-7) (9)) is a subspace of P5 Let Pn be the set of real polynomials of degree at most n. Show that s (pEP5 :p(-7) (9)) is a subspace of P5
4. Consider the set of all polynomials p(x, y) in two variables (x,y) € (0,1) (0, 1). Prove that this set is dense in C([0, 1] x [0, 1], R).
Notice that these polynomials form an orthogonal set with this inner product. Find the best 1²-13 Let P2 have the inner product given by evaluation at -5, -1, 1, and 5. Let po(t) = 2, P1(t)=t, and q(t) = 12 approximation to p(t) = t by polynomials in Span{Po.P1,9}. The best approximation to p(t) = t by polynomials in Span{Po.P2,q} is
2. Consider the set of all polynomials of the form 2 + at + bt2 where a and b are real number (a). Show by means of an example that this set is not closed under polynomial addition. (b) Show by means of an example that this set is not closed under scalar product.
Let P be the set of real polynomials. Prove P is a vector space.
4. Determine whether the following are subspaces of P4Recall that P is the set of all 8P polynomials of degree less than or equal to 4 (a) Let S be the set of polynomials px) E P4 of even degree. (b) Let S2 be the set of polynomials p(x) E P4 such that p(0) = 0
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...
Is the set of polynomials of the form p(x) = a + bra a subspace of P2? Prove your answer.