MATLAB: How to create a continuous cosine from different ”slices”

Question

Greetings,

I am trying to obtain a plot where I would like to represent a cosine function made from different time vectors. Here is the code I am using in order to make myself clear:

 % Define the frequencies 
  fs = 1; % Hz


  f1 = 1; % Hz
  f2 = 2; % Hz
 % Define the time vectors for 2 slices
  time1= (1:0.1:20)*1/fs; % slice1
  time2 = (20:0.1:40);    % slice2
 % Compute the cosine functions
  cos1 = cos(2*pi*f1*time1);
  cos2 = cos(2*pi*f2*time2);

Now, I do not know how to obtain a single continuous cosine in a plot. Normally, cos2 should begin where cos1 end. If I plot cos1 and cos2 on the same graph I will obtain 2 overlaped shifted cosines.

How can I make a plot where cos2 is 'glued' to cos1 obtaining a single cosine function which has two different frequencies and also assuring the continuation of time?

Any advice will be very appreciated.

Answer 1

plot([time1 time2],[cos1 cos2])