subscripts in CAS?

[Wes Loewer]

In Maxima, you can use subscripts, such as

Code:

sum(a[k]*x^k, k, 0, 5);

which results in

Code:

a[5]*x^5+a[4]*x^4+a[3]*x^3+a[2]*x^2+a[1]*x+a[0]

or more general

Code:

sum(a[k]*x^k, k, 0, n);

where n is a function parameter and a[n] are unspecified constants.

Is there a way to use subscripts in a similar manner on the Prime?