Problem 4 (Half-Range Expansions) Compute both the even and odd half-range expansions of the foll...
Problem 6: Find the cosine series for the symmetric (even) extension (or "cosine half-range expansion") f (t) of the function g(t) by using the complex Fourier series and the method of jumps f(t) = g(t) = sin t , g(-t) =-sin t , 0<t<π [Vol.III-Ch.1, 6 -r < t < 0
1. If fand g are both even functions, is the product fg even? If f and g both odd functions, is fg odd? What if f is even and g is odd? Justify your answers. (10 points) Find the domain g(x) =-. (10 points) 2. of the composited function fog, where f(x)=x+ and x +1 x+2 3. Let ifx <1 g(x) = x-3 ifx >2 Evaluate each of the following, if it exists. (10 points) lim g(x) lim gx)(i) lim...
You are given a finite step function xt=-1 0<t<4 1 4<t<8. Hand calculate the FS coefficients of x(t) by assuming half- range expansion, for each case below. Modify the code below to approximate x(t) by cosine series only (This is even-half range expansion). Modify the below code and plot the approximation showing its steps changing by included number of FS terms in the approximation. Modify the code below to approximate x(t) by sine series only (This is odd-half range expansion).. Modify...
3) (Symmetries and Fourier Coefficients) Compute the Fourier Series Coefficients a, b and XTk] for the following periodic repeating signals. Where appropriate, simplify the results for odd or even values of k. Note: You can not use the half-wave symmetry integrals if the half-wave symmetry is "hidden" (i.e. if there is a DC offset).] xft) Signal i x(t) Signal5 x(t) Signal 4 aeP O80 0.5 -1 4 8 I 2 4
3) (Symmetries and Fourier Coefficients) Compute the Fourier Series...
(a) The heat flux through the faces at the ends of bar is found to be proportional to un au/an at the ends. If the bar is perfectly insulated, also at the ends x 0 and x L are adiabatic conditions, Q1 ux(0, t) = 0 0 (2'7)*n prove that the solution of the heat transfer problem above (adiabatic conditions at both ends) gives as, 2 an: nnx u(x, t) Ao t An cos n-1 where Ao and An are...
3. This is an exercise about convolution. Consider the signals f and g below, both periodic with T -2. t sin(2t), -1-t 〈 0; (1+1), It _ 0.51, 一1 〈 t 〈 0; 0
Let$$ f(x)= \begin{cases}x, & 0 \leqslant x<2 \\ 1, & 2 \leqslant x<3\end{cases} $$Sketch the graph of f and then sketch the graphs of the even and odd extensions of f of period T = 2L = 6. You may do this all on the same set of axes if you can clearly indicate the different graphs (for example, use different colors).
How to do 5.2, now that we know from 5.1 that the function is
odd?
Problem 5. Consider the function f(t) = 47, IE(- 5) 5.1. (3%) The function f is: (a) odd, (B) even. 5.2. (7%) We extend the function f(3) = 42, IE(-5,5) periodically. Then ts Fourier Series is: (-1)+1 - sin(2nr), ( 4-1)+1 - sin(2nx), πη 12 (1)• (-1)"#* sin(2n2), ($ ^(-1) = 1) sin(m2).
k for 2 5. Consider the function f(x) = 37T 0 for 2 Hint: See examples of functions of a generic period t; James, 4th ed. pg. 581, Ex. 7.7 & 7.8 (a) State wether it has even or odd symmetry (b) Find the Fourier series representation for f. Plot graphs of the first three partial sums SI (c) Using the result in part (b), show that 1 + 1 +.. 7 4
k for 2 5. Consider the function...
Given, f(x) = {x +1,25x<4 4,0<x<2 (a) Sketch the graph of f(x) and its even half-range expansion. Then sketch THREE (3) full periods of the periodic function in the interval – 12 < x < 12. (6 marks) (b) Determine the Fourier cosine coefficients of Ql(a). (10 marks) (c) Write out f(x) in terms of Fourier coefficients you have found in Q1(b). (4 marks)