Notation of permittivity in farads per meter question

[KClose1983]

I am using an old textbook as a reference, and the equation given for the electrical permittivity of free space ε₀ is given in terms of:

​

(Fm^-1)

where this measurement notation represents farads per meter. Why the superscript of -1 in the notation?

 

[SteamKing]

x^(-1) = 1/x

Fm(-1) = F/m

Are you sure you didn't already know that?

 

[KClose1983]

Oh, geesh. Duh. Yeah, I knew that. Thanks!