' Test file to study exponent variables.

F{t} = t^t  :  Fa{t} = Diff[F,t]  :  Fb{t} = Diff[F,t,2]

A{t} = t^(t^t)  :  Aa{t} = Diff[A,t]  :  Ab{t} = Diff[A,t,2]
B{t} = (t^t)^t  :  Ba{t} = Diff[B,t]  :  Bb{t} = Diff[B,t,2]
C{t} = t^t^t    :  Ca{t} = Diff[C,t]  :  Cb{t}  = Diff[C,t,2]

<t = 3>

