Hi, I'm trying to learn using Mathematica and I can't figure out, how to insert a function into another function definition.
Ampl[t_]:=A*Exp[Alpha*t]
Equation[t_]:=-5*Exp[-4*Ampl[t]]+3*Ampl[t]-4*Ampl[t]^2+2
The result is
"Tag Plus is Protected."
I found some examples of this error like
http://superuser.com/questions/340289/setwrite-tag-plus-in-something-is-protected
But I can't see, how this is related, because I don't try to give a new definition to a protected symbol.
Sorry for a dumb question, but I'm used to work in Maple and it works there with no problem. Thanks for any advice.
