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2. For n . define functions T inductivelv such that 0, 1, 2, . . . (cosx) = cos(nx), with Folz) 1. (a) Prove that Tn is a polynomial for every n and compute its degree. b) Prove the recursion formula...
Problem 5. Consider least squares polynomial approximation to f(x) = cos (nx) on x E [-1,1] using...
Problem 5. Consider least squares polynomial approximation to f(x) = cos (nx) on x E [-1,1] using the inner product 1. In finding coefficients you will need to compute the integral By symmetry, an 0 for odd n, so we need only consider even n. (a) Make a change of variables and use appropriate identities to transform the integral for a to cos (Bcos 8)cos (ne) de (b) The Bessel function of even order, (x), can be defined by the...
1. (Taylor Polynomial for cos(ax)) For f(x)cos(ar) do the following. (a) Find the Taylor polynomials T(x) about 0 for f...
1. (Taylor Polynomial for cos(ax)) For f(x)cos(ar) do the following. (a) Find the Taylor polynomials T(x) about 0 for f(x) for n 1,2,3,4,5 (b) Based on the pattern in part (a), if n is an even number what is the relation between Tn (x) and TR+1()? (c) You might want to approximate cos(az) for all in 0 xS /2 by a Taylor polynomial about 0. Use the Taylor polynomial of order 3 to approximate f(0.25) when a -2, i.e. f(x)...
1. (a) Use Jordan form to prove that every complex nx n matrix T is similar...
1. (a) Use Jordan form to prove that every complex nx n matrix T is similar to its transpose. [5 marks]
Consider the series following series of functions ' sin(nx) 3 n-1 a) Show that the series is absolutely and uniformly convergent on the real axis. Let f be its summation function n sin(nx) b) Sho...
Consider the series following series of functions ' sin(nx) 3 n-1 a) Show that the series is absolutely and uniformly convergent on the real axis. Let f be its summation function n sin(nx) b) Show that f E C(R) and that 1 cos(nx) f'(x)= 2-1 c) Show that 「 f#072821) f(x)dx = k=0
Consider the series following series of functions ' sin(nx) 3 n-1 a) Show that the series is absolutely and uniformly convergent on the real axis. Let f...
2. The polynomial p of degree n that interpolates a given function f at n+1 prescribed nodes is u...
Please answer problem 4, thank you.
2. The polynomial p of degree n that interpolates a given function f at n+1 prescribed nodes is uniquely defined. Hence, there is a mapping f -> p. Denote this mapping by L and show that rl Show that L is linear; that is, 3. Prove that the algorithm for computing the coefficients ci in the Newton form of the interpolating polynomial involves n long operations (multiplications and divisions 4. Refer to Problem 2,...
2. The Chebyshev polynomials can be determined from T.(x) = cos(n cos-?x). (a) Find T-(x) from...
2. The Chebyshev polynomials can be determined from T.(x) = cos(n cos-?x). (a) Find T-(x) from above formula. (b) Find Tn+1(x) + Tn-1(x) in terms of T,(x). (c) Show that In/2] n! Tn () = KO (2k)! (n – 2k);?"*2*(x2 – 1)". (Note: You need to prove it in detail. To do it, you may need to consider two cases: n=2p-1 (odd) and n=2p (even). )
The Chebyshev polynomials can be determined from Tn (2) = cos(n cos-1.). (c) Show that n!...
The Chebyshev polynomials can be determined from Tn (2) = cos(n cos-1.). (c) Show that n! .n-2k [n/2] T(z) = 1 k= (2k)!(n – 2k)!" —2k (22 – 1)“. (Note: You need to prove it in detail. To do it, you may need to consider two cases: n=2p-1 (odd) and n=2p (even). )
with distinct nodes, prove there is at most one polynomial of degree ≤ 2n + 1 that interpolates the data. Remember the F...
with distinct nodes, prove there is at most one polynomial of
degree ≤ 2n + 1 that interpolates the data. Remember the
Fundamental Theorem of Algebra says a nonzero polynomial has number
of roots ≤ its degree. Also, Generalized Rolle’s Theorem says if r0
≤ r1 ≤ . . . ≤ rm are roots of g ∈ C m[r0, rm], then there exists ξ
∈ (r0, rm) such that g (m) (ξ) = 0.
1. (25 pts) Given the table...
Define x1 (t) = cos(Ft) for allt € R. Define 0<t<1 Compute (11 * x2)(t), showing...
Define x1 (t) = cos(Ft) for allt € R. Define 0<t<1 Compute (11 * x2)(t), showing all your workings. 0 otherwise. 1 C ={ :
(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact. (b) Prove that for any є > 0 the...
(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact. (b) Prove that for any є > 0 there exists some N > 0 so that for any x E A we have (c) Prove that A is totally bounded. (d) Prove that A is compact
(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact....
Problem 5. Consider least squares polynomial approximation to f(x) = cos (nx) on x E [-1,1] using the inner product 1. In finding coefficients you will need to compute the integral By symmetry, an 0 for odd n, so we need only consider even n. (a) Make a change of variables and use appropriate identities to transform the integral for a to cos (Bcos 8)cos (ne) de (b) The Bessel function of even order, (x), can be defined by the...
1. (Taylor Polynomial for cos(ax)) For f(x)cos(ar) do the following. (a) Find the Taylor polynomials T(x) about 0 for f(x) for n 1,2,3,4,5 (b) Based on the pattern in part (a), if n is an even number what is the relation between Tn (x) and TR+1()? (c) You might want to approximate cos(az) for all in 0 xS /2 by a Taylor polynomial about 0. Use the Taylor polynomial of order 3 to approximate f(0.25) when a -2, i.e. f(x)...
1. (a) Use Jordan form to prove that every complex nx n matrix T is similar to its transpose. [5 marks]
Consider the series following series of functions ' sin(nx) 3 n-1 a) Show that the series is absolutely and uniformly convergent on the real axis. Let f be its summation function n sin(nx) b) Show that f E C(R) and that 1 cos(nx) f'(x)= 2-1 c) Show that 「 f#072821) f(x)dx = k=0
Consider the series following series of functions ' sin(nx) 3 n-1 a) Show that the series is absolutely and uniformly convergent on the real axis. Let f...
Please answer problem 4, thank you.
2. The polynomial p of degree n that interpolates a given function f at n+1 prescribed nodes is uniquely defined. Hence, there is a mapping f -> p. Denote this mapping by L and show that rl Show that L is linear; that is, 3. Prove that the algorithm for computing the coefficients ci in the Newton form of the interpolating polynomial involves n long operations (multiplications and divisions 4. Refer to Problem 2,...
2. The Chebyshev polynomials can be determined from T.(x) = cos(n cos-?x). (a) Find T-(x) from above formula. (b) Find Tn+1(x) + Tn-1(x) in terms of T,(x). (c) Show that In/2] n! Tn () = KO (2k)! (n – 2k);?"*2*(x2 – 1)". (Note: You need to prove it in detail. To do it, you may need to consider two cases: n=2p-1 (odd) and n=2p (even). )
The Chebyshev polynomials can be determined from Tn (2) = cos(n cos-1.). (c) Show that n! .n-2k [n/2] T(z) = 1 k= (2k)!(n – 2k)!" —2k (22 – 1)“. (Note: You need to prove it in detail. To do it, you may need to consider two cases: n=2p-1 (odd) and n=2p (even). )
with distinct nodes, prove there is at most one polynomial of
degree ≤ 2n + 1 that interpolates the data. Remember the
Fundamental Theorem of Algebra says a nonzero polynomial has number
of roots ≤ its degree. Also, Generalized Rolle’s Theorem says if r0
≤ r1 ≤ . . . ≤ rm are roots of g ∈ C m[r0, rm], then there exists ξ
∈ (r0, rm) such that g (m) (ξ) = 0.
1. (25 pts) Given the table...
Define x1 (t) = cos(Ft) for allt € R. Define 0<t<1 Compute (11 * x2)(t), showing all your workings. 0 otherwise. 1 C ={ :
(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact. (b) Prove that for any є > 0 there exists some N > 0 so that for any x E A we have (c) Prove that A is totally bounded. (d) Prove that A is compact
(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact....
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