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The Maxima on-line user's manual

Algebra Calculator

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Args

Function: args (<expr>) Returns the list of arguments of expr, which may be any kind of expression other than an atom. Only the arguments of the top-level operator are extracted; subexpressions of expr appear as elements or subexpressions of elements of the list of arguments.

expr: x . dx . dy + z . dy . dz + y . dx . dz;
expr2: x . [dx, dy] + z . [dy, dz] + y . [dx, dz];
expr3: x * [dx, dy] + z * [dy, dz] + y * [dx, dz];
expr4: [x, dx, dy] + [z, dy, dz] + [y, dx, dz];
expr5: [[x, dx, dy], [z, dy, dz], [y, dx, dz]];
expr6: x . del(x) . del(y) + z . del(y) . del(z) + y . del(x) . del(z);
part(expr, 1);
length(expr);
op(expr);
args(expr);
map(op, args(expr));
map(args, args(expr));
map(args, args(expr6));
diffform(vars, expr) := block(    [n, k],    0);
diff(x + y);

The order of the items in the list may depend on the global flag inflag.

args (<expr>) is equivalent to substpart ("[", <expr>, 0). See also substpart, and op.

There are also some inexact matches for args. Try ?? args to see them.

(%o1)                                true
(%i2) 

Related Examples

args-block-modulus-submatrix

modulus:2;

N:2;

block( P:0, for i: ...

Calculate

args-matrix-nullspace

m: matrix([1,0,-1,x],...

t:nullspace(m);

t:args(t);

Calculate

args-printf

/* Definintion von zw...

b:[false,false,true,t...

eq2: /* Definition ei...

Calculate

args-diff-false-floor-map-matrix-numer-ratprint-rhs-solve

Punkt: matrix( [-6,-2...

Punkt:args(Punkt);

f(x):=x[2]=a*x[1]^3+b...

Calculate

args-determinant-expand-factor-ident-invert-matrix-solve-sqrt-transpose

A: matrix([5,2],[2,8]);

B:A-t*ident(2);

C:determinant(B);

Calculate

args-block-load-sqrt-sum

len (vec) := block ([...

load (eigen);

a : covect ([3, 4]);

Calculate

args-divisors-lreduce-matrix-subst

s: divisors(28);

lreduce ("+", args(s...

divisors (a);

Calculate

args-length-lfreeof-ratexpand

expr: ratexpand(a*x^2...

alist: args(expr);

alistlen: length(alist);

Calculate

args-matrix

M1: matrix([n,x1,x2],...

args(M1);

Calculate