The MARGIN command in Matlab

[extradeath]

HI friends

I'm working on a COntrol project using MATLAB
Using the command MARGIN

I've noticed a strange thing that when:
[Gm,Pm,Wg,Wp]=margin(sys)
margin(sys)

each command get a different Gm...
there is a different of about (1-->4)db not the same
Why??

Please I need a rapid response

 

[wholx]

Matlab help

have u checked out the Matlab Help with care? it can answer all your questions like this.