Maple "assign()" statement ( Maple response to "?assign" )

assign - perform assignments

Calling Sequence:

assign(a, b)

assign(a = b)

assign(t)

Parameters:

a - a name

b - any expression

t - a list or set of equations

Description:

· For the cases assign(a,b) and assign(a = b) where a is a name, the assignment a := b is made and NULL is returned. The arguments to assign are evaluated. Hence if a is already assigned the name b, then assign(a,2) would assign b the value 2. Note that b is any valid expression, with one exception: it cannot be an expression sequence containing more than one element.

· If the argument is a list or set of equations, then assign is applied to each equation in the list or set.

· One use of this function is to apply it to a set of equations returned by the solve function when it is desired to assign the solution values to the variables.

Examples:

> assign(a,2);
a;

> assign(b=99);
assign(c=a);
a,b,c;

> s := solve( {x+y=1, 2*x+y=3}, {x,y} );