MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

calculating with vectors of variable length


Hi,
I'd like to work with vectors of variable length. A short example would 
be this:
a = {a1,...,an}
f[x_]:=a.x
The vector x should be treated as a vector {x1,...,xn} and n should be 
variable and not be specified prior to any calculations.
One possible calculation would be:
D[f,x3]
which should give a3 according to the definition of f above.

How can I implement that in mathematica?

Thanks in advance,
Benjamin




  • Prev by Date: Infinite Series Error - Bug? (again)
  • Next by Date: UnitStep plotting
  • Previous by thread: Infinite Series Error - Bug? (again)
  • Next by thread: Re: calculating with vectors of variable length