the exp function does not work

It may look like a simple problem but I cannot get my way through. When using exp(2), I get an "Index exceeds matrix dimensions" error. I have always used the exp function, why now I get this error?

Thank you for your help, Alessio.

Answer 1

[per isakson]

    >> exp(2)
    ans =
        7.3891

I guess exp is "shadowed" on your system. Run

    >> which exp
    built-in (C:\Program Files\MATLAB\R2013a\toolbox\matlab\elfun\@double\exp)  % double

What do you get?

[Sebastiano delre]

I have restarted matlab and now it works fine...

[Sebastiano delre]

Thank you!