Add x1[n] = exp(−n/4), −4 ≤ n ≤ 8 with x2[n] = cos(πn/4), 0 ≤ n ≤ 12. Plot x1[n], x2[n], and y[n].

Question

Albert 2022-10-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1819970-add-x1-n-exp-n-4-4-n-8-with-x2-n-cos-n-4-0-n-12-plot-x1-n-x2-n-and-y-n

编辑： vidyesh 2024-9-15

Hello, I am having a problem with this. I couldn't identify where to start. Thank you.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

vidyesh 2024-9-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1819970-add-x1-n-exp-n-4-4-n-8-with-x2-n-cos-n-4-0-n-12-plot-x1-n-x2-n-and-y-n#answer_1516700

编辑：vidyesh 2024-9-15

在 MATLAB Online 中打开

Hi Albert,

The starting point would be to decide the period of signals/sample spacings. I am assuming 0.01.

1) define 'n' between -4 and 12 with increments of 0.01.

n = -4:0.01:12;

2) You can then use indexing to set the range of your signals while defining them. For example

% Define your signal, I have assumed x1 is 0 outside of mentioned range
x1 = zeros(1,numel(n));
% Define the function for all values of n
sig1 =  exp(-1*n/4);
% Define the range for which function is defined
range =  n>=-4 &  n<=8;
% Store the values of the signal within the defined range only
x1(range) = sig1(range);