清空筛选条件
清空筛选条件

how to plot the magnitude of x(k) in matlab

3 次查看（过去 30 天）
Aash
Aash 2017-10-24
评论： Aash 2017-10-24
x(k)= 4j exp(-6*pi*j*k/N)
where 0 <= k <= N-1 and x(k) be N-point DFT of the length N sequence

请先登录，再回答此问题。

采纳的回答

Rik
Rik 2017-10-24
You already have a function, you just need to calculate the magnitude, which is just the abs function. The thing is, you can see beforehand that this is a useless exercise, because it will always be 4. The exponent part doesn't influence the magnitude, so k has no influence on the magnitude.
N=20;
x_mag=@(k) abs(4j*exp(-6*pi*1j*k/N));
fplot(x_mag,[0,N-1])
(you can also use linspace and plot)

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by