MATLAB: Help to construct vectors

Question

Hi friends,

can anyone help me to construct this vectors:

construct a vector containing numbers starting at 20 and counting backwards by ones to 10

construct a vector containing 15 randomly generated numbers between 1and 2

Answer 1

Here is the first solution using the colon operator:

>> 20:-1:10
ans =
  20    19    18    17    16    15    14    13    12    11    10

Learners learn most when they actually try things and learn from experience. Part of that process is learning where to find information, and actually MATLAB has great documentation which you can easily search using your favorite internet search engine. When I searched for "MATLAB random vector", the first links were the documentation that will tell you how to solve your second task.

If your favorite internet search engine is not working, then follow this link:

http://www.mathworks.com/help/matlab/math/create-arrays-of-random-numbers.html

Because these tasks are really very basic you should do these tutorials:

http://www.mathworks.com/help/matlab/getting-started-with-matlab.html