In Maple, you can provide a name for the result of a Maple command. If
you do this, then you can use the name you provided to refer to the
result in other commands. For example, suppose you wanted to compute
the value of the expression for
several values of **x**. One way to do this in Maple is to simply use
the `subs` command as follows.

> subs(x=1,x^12-45*x^11+200*x^5-3600*x^2+400);

> subs(x=-2,x^12-45*x^11+200*x^5-3600*x^2+400);

However, if you want the value of the expression for several values of
**x**, then a more efficient way to do this is to label your expression
and then use the label in the `subs` commands, as shown below.

> p := x^12-45*x^11+200*x^5-3600*x^2+400;

> subs(x=1,p);

> subs(x=-2,p);

In the example above, the label was chosen to be the letter `
p`. We could easily have chosen another letter, there is nothing
special about the letter `p`. Also, labels don't have to consist
of single letters - we could have used a sequence of several letters
like `poly` (short for polynomial) for our label.

Mon Aug 28 09:31:56 EDT 1995