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pol:=x^4+x^3-x^2-x;
whattype(pol);
nops(pol);
op(pol);
op(1,pol);
subs(x=0, cos(x)*(sin(x)+x^2+1));
eval(%);
subs(x=y, y=z, x*y^2);
subs({x=y, y=z}, x*y^2);
subs(x*y=product, x*y*z);
algsubs(x*y=product, x*y*z);
subsop(3=y, x^2+x+1/x);
vyraz:=(x^2+2*x+1)^2+(x^2-2*x+1)^2;
map(factor, vyraz);
pol=x^4+x^3 -x^2 -x ; pol
x4
+ x3
− x2
− x
type ( pol )
<type 'sage.symbolic.expression.Expression'>
pol . nops ()
4
operandy=pol . operands () ; operandy
[x4
, x3
, −x2
, −x]
operandy [ 0 ]
x4
( cos (x) * sin (x)+x^2+1) . subs ({x :0})
1
var ( 'y , z') ; ( x*y^2) . subs ({x : y}) . subs ({y : z })
(y, z)
z3
(x*y^2) . subs ({x : y , y : z })
yz2
maxima( ” ratsubst ( product , x*y , x*y*z ) ” )
product z
vyraz=(x^2+2*x+1)^2+(x^2 -2*x+1)^2; vyraz
(
x2
+ 2 x + 1
)2
+
(
x2
− 2 x + 1
)2
map( factor , vyraz . operands () )
[(x + 1)4
, (x − 1)4
]