Is it possible to make inactive some of lines?

Assume that

 A = [a*b;...    %line 1
      a*b^2;...  %line 2
      a*b^3;...  %line 3
       ]

Is it possible to generate a command to make inactive any line, for ex. line 2 like:

 A = [a*b;...     %line 1
      %a*b^2;...  %line 2
      a*b^3;...   %line 3
       ]

Thanks,

[KSSV]

In which contest it is? You cannot do that, it will throw an error.

[Volkan Yangin]

The question is related with my problem given in link:

https://www.mathworks.com/matlabcentral/answers/874428-how-can-i-repeat-a-formula-without-for-loop?s_tid=srchtitle

I have to generate a formula according to any number. It is so easy in MATLAB, but SIMULINK gives me a lot of error when i implement this code.

Answer 1

[Bruno Luong]

Put "..." (without the quotes) in front of the lines you want to hide

[Volkan Yangin]

Can i specify a line to ignore? Is there a command which enables to ignore line 2?

[Bruno Luong]

Please explain of adding/removing "..." to hide/disable the lines is not suitaable for your need.

[Bruno Luong]

Just to be sure you understand what I wrote

 A = [a*b;...    %line 1
      ... a*b^2; ...  %line 2
      a*b^3;...  %line 3
       ]