Consider the function f ( x ) = 4 π ( cos x 1 −...
Consider the function 
f ( x ) = 4 π ( cos x 1 − cos 3 x 3 + cos 5 x 5 − cos 7 x 7
+ ⋯ ). Fire up a plotting program or spreadsheet, and plot this
over the range of x=0 to 4π. Do it one term at a time, so make four
plots: one with the first term, one with the first and second, the
next with one, two, and three, and the last with all four. What
shape is this converging on?
Homework Answers
On adding more and more terms it is converging towards the square wave, all the plots are
plz
like
Supposez1 =4 cos 3 +isin 3 andz2 =2 cos 6 +isin 6 . Computez1z2. (a) 8(cos?π?+isin?π?)...
Supposez1 =4 cos 3 +isin 3 andz2 =2 cos 6 +isin 6 .
Computez1z2.
(a) 8(cos?π?+isin?π?) 22
(b) 4(cos?4π?+isin?4π?) 66
(c) 2(cos?π?+isin?π?) 66
(d) cos(π)+isin(π)
(e) 8(cos?π?+isin?π?)
66
17. Suppose z1 = 4 (cos (1) + i sin (5)) and z2 = 2 (cos () + i sin (7)). Compute z122. (a) 8(cos (7) + i sin (7)) (b) 4(cos (4) + i sin (*)) (c) 2(cos (7) + i sin ()) (d) cos(T) + i sin(TT) (e) 8(cos (7)...
Using Excel, plot the function f(t)=3*cos(500*π*t) + 5*cos(800*π*t) from 00025 to .1s at .0025s intervals. Connect...
Using Excel, plot the function f(t)=3*cos(500*π*t) + 5*cos(800*π*t) from 00025 to .1s at .0025s intervals. Connect the points with straight lines. Explain the shape of the resulting plot. Find the FFT using Microsoft Excel.
Consider a periodic function f(x) defines as follows: -π < x < -π/2, f(x) = 0 -π/2 < x...
Consider a periodic function f(x) defines as follows:
-π < x < -π/2, f(x) = 0
-π/2 < x < π/2, f(x) = 1
π/2 < x < π, f(x) = 0
The function is periodic every 2π. Find the first four non-zero
terms in the Fourier series of this function for the interval [-π,
π] or equivalently for the interval [0, 2π]. Note that depending if
the function is odd or even, the first four terms do not
necessarily...
f(x) = cos(x), [0, π/2], 4 rectangles
Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the x-axis over the given interval. (Round your answers to four decimal places.) f(x) = cos(x), [0, π/2], 4 rectangles
Use your bes judgement on where to place the tile 1. Submit plots of the following...
Use your bes judgement on where to place the tile 1. Submit plots of the following functions. Lahel all axes and include a title (and a legend when appropriate). The first two plots are for discrete- time signals. a. 5 cos(π n /6-π/2). Plot this function in a figure by itself. b. I0 sin(π n/6). Plot this function in afigure by itself. c. 5 cos(3 t 6). Plot this function in a figure by itself. d. 10 sin (4 t...
please explain and do in matlab Problem 3. Consider the function f(x) e cos(2r). (1) Sketch its graph over the interval [0, m) by the following commands: (2) Using h = 0.01 π/6 in [0, π]. The comm...
please explain and do in matlab
Problem 3. Consider the function f(x) e cos(2r). (1) Sketch its graph over the interval [0, m) by the following commands: (2) Using h = 0.01 π/6 in [0, π]. The commands are: to compute the difference quotient for z And the difference quotient is: ( 6 (3) Using h-0.01 to approximate the second derivative by computing the difdifquo for in [0, π). The commands are: And the difdifquo is:
Problem 3. Consider the...
1. (a) Evaluate the Fourier coefficients a, an, ba for the function defined as f)-2 cos() for-π/2...
1. (a) Evaluate the Fourier coefficients a, an, ba for the function defined as f)-2 cos() for-π/2 s sn2 and zero else over the period of 2T, do NOT use MATLAB or a calculator for integrations. All the steps should be shown. Write a few terms of the Fourier series expansion Plot 2 or 3 cycles of the Fourier series using MATLAB and verify whether the plot matches the given waveform Find Co and Cn and plot the amplitude spectrum...
Let f(x) be the 27-periodic function which is defined by f(x)-cos(x/4) for-π < x < 1. π. (a) Draw the graph of y f(x) over the interval-3π < x < 3π. Is f continuous on R? (b) Find the...
Let f(x) be the 27-periodic function which is defined by f(x)-cos(x/4) for-π < x < 1. π. (a) Draw the graph of y f(x) over the interval-3π < x < 3π. Is f continuous on R? (b) Find the trigonometric Fourier Series (with L π) for f(x). Does the series converge absolutely or conditionally? Does it converge uniformly? Justify your answer. (c) Use your result to obtain explicit values for these three series: 16k2 1 16k2 1 (16k2 1)2 に1...
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...
In MATLAB please Consider the nonlinear function: y = f(x) = x3 cos x a. Plot...
In MATLAB please
Consider the nonlinear function: y = f(x) = x3 cos x a. Plot y as a function of x as x is varied between -67 and 67. In this plot mark all the locations of x where y = 0. Make sure to get all the roots in this range. You may need to zoom in to some areas of the plot. These locations are some of the roots of the above equation. b. Use the fzero...
Supposez1 =4 cos 3 +isin 3 andz2 =2 cos 6 +isin 6 .
Computez1z2.
(a) 8(cos?π?+isin?π?) 22
(b) 4(cos?4π?+isin?4π?) 66
(c) 2(cos?π?+isin?π?) 66
(d) cos(π)+isin(π)
(e) 8(cos?π?+isin?π?)
66
17. Suppose z1 = 4 (cos (1) + i sin (5)) and z2 = 2 (cos () + i sin (7)). Compute z122. (a) 8(cos (7) + i sin (7)) (b) 4(cos (4) + i sin (*)) (c) 2(cos (7) + i sin ()) (d) cos(T) + i sin(TT) (e) 8(cos (7)...
Consider a periodic function f(x) defines as follows:
-π < x < -π/2, f(x) = 0
-π/2 < x < π/2, f(x) = 1
π/2 < x < π, f(x) = 0
The function is periodic every 2π. Find the first four non-zero
terms in the Fourier series of this function for the interval [-π,
π] or equivalently for the interval [0, 2π]. Note that depending if
the function is odd or even, the first four terms do not
necessarily...
Use your bes judgement on where to place the tile 1. Submit plots of the following functions. Lahel all axes and include a title (and a legend when appropriate). The first two plots are for discrete- time signals. a. 5 cos(π n /6-π/2). Plot this function in a figure by itself. b. I0 sin(π n/6). Plot this function in afigure by itself. c. 5 cos(3 t 6). Plot this function in a figure by itself. d. 10 sin (4 t...
please explain and do in matlab
Problem 3. Consider the function f(x) e cos(2r). (1) Sketch its graph over the interval [0, m) by the following commands: (2) Using h = 0.01 π/6 in [0, π]. The commands are: to compute the difference quotient for z And the difference quotient is: ( 6 (3) Using h-0.01 to approximate the second derivative by computing the difdifquo for in [0, π). The commands are: And the difdifquo is:
Problem 3. Consider the...
1. (a) Evaluate the Fourier coefficients a, an, ba for the function defined as f)-2 cos() for-π/2 s sn2 and zero else over the period of 2T, do NOT use MATLAB or a calculator for integrations. All the steps should be shown. Write a few terms of the Fourier series expansion Plot 2 or 3 cycles of the Fourier series using MATLAB and verify whether the plot matches the given waveform Find Co and Cn and plot the amplitude spectrum...
Let f(x) be the 27-periodic function which is defined by f(x)-cos(x/4) for-π < x < 1. π. (a) Draw the graph of y f(x) over the interval-3π < x < 3π. Is f continuous on R? (b) Find the trigonometric Fourier Series (with L π) for f(x). Does the series converge absolutely or conditionally? Does it converge uniformly? Justify your answer. (c) Use your result to obtain explicit values for these three series: 16k2 1 16k2 1 (16k2 1)2 に1...
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...
In MATLAB please
Consider the nonlinear function: y = f(x) = x3 cos x a. Plot y as a function of x as x is varied between -67 and 67. In this plot mark all the locations of x where y = 0. Make sure to get all the roots in this range. You may need to zoom in to some areas of the plot. These locations are some of the roots of the above equation. b. Use the fzero...
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