what does the command A(:,x) means

A being the matrix , x being some index

[madhan ravi]

That is the reason I told you to learn about matlab indexing:

>> x=2;

>> A=rand(4)

A =

    0.9516    0.2691    0.4177    0.6663
    0.9203    0.4228    0.9831    0.5391
    0.0527    0.5479    0.3015    0.6981
    0.7379    0.9427    0.7011    0.6665

>> A(:,x)

ans =

    0.2691
    0.4228
    0.5479
    0.9427

>> 

[GOPAL RAWAT]

thanks for sharing the info

Answer 1

[Jan]

Please read the "Getting Stared" chapters of the documentation and use Matlab's OnRamp to learn the basics: https://matlabacademy.mathworks.com/