u(t)=sinc⁡(100t)and y(t)=cos(400πt) and x(t)=u(t)*y(t)

1 次查看（过去 30 天）

显示更早的评论

Mashrur Zawad 2022-9-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1802680-u-t-sinc-100t-and-y-t-cos-400-t-and-x-t-u-t-y-t

评论： Walter Roberson 2022-9-11

u(t)=sinc⁡(100t)and y(t)=cos(400πt) and x(t)=u(t)*y(t)

Now I need the code for plotting u(t) , |U(F)|, y(t), |Y(F)| , x(t) and |X(F)|

3 个评论
显示 1更早的评论隐藏 1更早的评论

Mashrur Zawad 2022-9-11

I have written the code like this but not sure is it okay or not

t=linspace(-10,10)

u=sinc(100*t)

subplot(6,1,1)

plot(t,u)

U=fft(u)

Uabs=abs(U)

subplot(6,1,2)

plot(t,fftshift(Uabs))

c=cos(400*pi*t)

subplot(6,1,3)

plot(t,c)

C=fft(c)

Cabs=abs(C)

subplot(6,1,4)

plot(t,fftshift(Cabs))

x=u.*c

subplot(6,1,5)

plot(t,x)

X=fft(x)

Xabs=abs(X)

subplot(6,1,6)

plot(t,fftshift(Xabs))

Walter Roberson 2022-9-11

We do not know. U(F) and similar are not defined in the posted question

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Walter Roberson 2022-9-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1802680-u-t-sinc-100t-and-y-t-cos-400-t-and-x-t-u-t-y-t#answer_1050930

在 MATLAB Online 中打开

syms t

u(t) = sinc(17*t)

u(t) =

fplot(u)

2 个评论
显示无隐藏无

Mashrur Zawad 2022-9-11

It doesn't answer whole question

Walter Roberson 2022-9-11

在 MATLAB Online 中打开

It shows you how to construct functions, and it shows you how to plot functions. The only thing missing is the information that in MATLAB, π can be coded for symbolic use as

Pi = sym(pi);

and then refer to Pi .

Beyond that, there can be one or two additional steps depending whether each plot is to be in its own figure, or each plot is to be in its own axes (and if so should the 6 plots be 6 vertical, 6 horizontal, 3 vertical and 2 horizontal?) or if all of the plots should be on the same axes.

We are not here to answer people's homework questions: we are here to teach people how to use MATLAB.

请先登录，再进行评论。

请先登录，再回答此问题。