Here we consider the 2n-periodic function f: R → R, that is given by f(2) = | sin()| for |æ| < . a) Use Eulers formulas to show, that the functions complex Fourier series f(x) = E-, Cneinx is given by 1 2/2(-1)" – 4 Cn = for n E Z. 16n2 – 1 -

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
icon
Concept explainers
Topic Video
Question

I need help with question a. I have attached a picture of the whole assignment. 

Here we consider the 2n-periodic function f: R → R, that is given by
f (x) = | sin()|
for |æ| < T.
a) Use Eulers formulas to show, that the functions complex Fourier series
f(x) = E- Cneinz
is given by
1 2/2(-1)" – 4
Cn =
for n e Z.
16n2 – 1
φ.ψε 1?(-π, π])
b) In the space L2 ([-n, T]) there is a inner product for arbitrary
by
(9, 4) = / p(x)\(x) dx.
Determine whether the Fourier series for f (x) converges uniformly on R to f (x), converges
pointwise to f (x), converges to f (x) with respect to the norm on L? ([-n, T]). Justify the
-T,
answers.
c) Her we consider the function h(x) given by the parameters 1_1, 1o and 1, as
h(x) = A-1e¬i* + do + A1e²ª.
Determine for 1-1 = -3, Xo = -2, A1 = –1
L? ([-T, 1]).
Explain how the parameters 1_1do and 1, must be selected to obtain the smallest value of the
if h has the smallest possible distance to f in
I = S", || sin(4)| –- A1ei – do – A_1e-i|² dx.
integral
Specify these values of 1_1, 2o and 4.
Transcribed Image Text:Here we consider the 2n-periodic function f: R → R, that is given by f (x) = | sin()| for |æ| < T. a) Use Eulers formulas to show, that the functions complex Fourier series f(x) = E- Cneinz is given by 1 2/2(-1)" – 4 Cn = for n e Z. 16n2 – 1 φ.ψε 1?(-π, π]) b) In the space L2 ([-n, T]) there is a inner product for arbitrary by (9, 4) = / p(x)\(x) dx. Determine whether the Fourier series for f (x) converges uniformly on R to f (x), converges pointwise to f (x), converges to f (x) with respect to the norm on L? ([-n, T]). Justify the -T, answers. c) Her we consider the function h(x) given by the parameters 1_1, 1o and 1, as h(x) = A-1e¬i* + do + A1e²ª. Determine for 1-1 = -3, Xo = -2, A1 = –1 L? ([-T, 1]). Explain how the parameters 1_1do and 1, must be selected to obtain the smallest value of the if h has the smallest possible distance to f in I = S", || sin(4)| –- A1ei – do – A_1e-i|² dx. integral Specify these values of 1_1, 2o and 4.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Sample space, Events, and Basic Rules of Probability
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,