What is the difference between A' vs A.' ?

First one is transpose of matrix A.

I don't see any difference between A' and A.' since I keep getting same thing

[Zihan Qiao]

I believe this screenshot can answer your question.

A’ will do the complex conjugate of the value additionally;

While A.' will only be the transpose.

Answer 1

[Walter Roberson]

>> A = 1+2i

A =

                            1 +                     2i

>> A'

ans =

                            1 -                     2i

>> A.'

ans =

                            1 +                     2i

Notice that A' gave the complex conjugate of the value as well as doing the transpose.

Answer 2

[the cyclist]

Try it with a complex matrix, and you'll see.

And you can read about the difference in the documentation of transpose and ctranspose.